@font-face {
  font-family: Orbitron;
  src: url("../assets/runtime/fonts/Orbitron-Medium.ttf");
  font-weight: 500;
}

@font-face {
  font-family: Orbitron;
  src: url("../assets/runtime/fonts/Orbitron-Bold.ttf");
  font-weight: 700;
}

@font-face {
  font-family: Orbitron;
  src: url("../assets/runtime/fonts/Orbitron-Black.ttf");
  font-weight: 900;
}

@font-face {
  font-family: Oswald;
  src: url("../assets/runtime/fonts/Oswald-VariableFont_wght.ttf");
}

@font-face {
  font-family: Zen;
  src: url("../assets/runtime/fonts/ZenKakuGothicNew-Regular.ttf");
  font-weight: 400;
}

@font-face {
  font-family: Zen;
  src: url("../assets/runtime/fonts/ZenKakuGothicNew-Bold.ttf");
  font-weight: 700;
}

:root {
  --ink: #071b32;
  --navy: #031126;
  --navy-2: #061d3a;
  --blue: #1cbcf5;
  --cyan: #66ddff;
  --yellow: #ffc61a;
  --pink: #ff3ba8;
  --paper: #eef8ff;
  --line: rgba(68, 202, 255, .48);
  --sd-space-section-pc: 72px;
  --sd-space-section-tb: 48px;
  --sd-space-section-sp: 32px;
  --sd-gutter-tb: 28px;
  --sd-gutter-sp: 18px;
  --sd-control-row-h: 70px;
}

* { box-sizing: border-box; }
html {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
  scroll-behavior: smooth;
}
body {
  width: 100%;
  max-width: 100%;
  margin: 0;
  overflow-x: clip;
  background: #061a32;
  color: var(--ink);
  font-family: Zen, system-ui, sans-serif;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.sd-sp-break { display: none; }

.sd-site-motion-bg {
  position: fixed;
  z-index: 0;
  inset: 0;
  height: 100vh;
  overflow: hidden;
  background: #061a32;
  pointer-events: none;
}

.sd-site-motion-bg video,
.sd-site-motion-bg > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .4;
  filter: saturate(.78) contrast(1.06) brightness(.86);
}

.sd-site-motion-bg span {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 48%, rgba(20, 105, 169, .08), transparent 42%),
    linear-gradient(180deg, rgba(2, 15, 34, .34), rgba(3, 25, 51, .54));
}

main,
.sd-footer {
  position: relative;
  z-index: 1;
}

main {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

.sd-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sd-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 70px;
  padding: 0 2.8vw;
  background: linear-gradient(180deg, rgba(1, 7, 18, .97), rgba(2, 10, 23, .84));
  border-bottom: 1px solid rgba(72, 199, 255, .24);
  color: #fff;
  backdrop-filter: blur(14px);
}

.sd-header__brand,
.sd-nav,
.sd-kicker,
.sd-chapter,
h1,
h2,
h3,
.sd-button {
  font-family: Orbitron, sans-serif;
}

.sd-header__brand {
  font-size: 25px;
  letter-spacing: -.06em;
}

.sd-nav {
  display: flex;
  gap: 30px;
  margin-left: auto;
  font-size: 13px;
  letter-spacing: .08em;
}

.sd-nav a { opacity: .82; }
.sd-nav a:hover { opacity: 1; color: var(--cyan); }

.sd-header-social {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sd-social-link {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #a9dff3;
  border: 1px solid rgba(102, 221, 255, .22);
  background: rgba(3, 21, 42, .52);
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.sd-social-link:hover {
  color: #fff;
  border-color: var(--cyan);
  background: rgba(15, 78, 122, .72);
  transform: translateY(-1px);
}

.sd-header-social .sd-social-link {
  width: 30px;
  height: 36px;
  border: 0;
  background: transparent;
}

.sd-header-social .sd-social-link:hover {
  border-color: transparent;
  background: transparent;
}

.sd-social-icon {
  display: inline-block;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  background: currentColor;
  -webkit-mask: center / contain no-repeat;
  mask: center / contain no-repeat;
}

.sd-social-icon--youtube {
  width: 20px;
  -webkit-mask-image: url("../assets/social/youtube.svg");
  mask-image: url("../assets/social/youtube.svg");
}

.sd-social-icon--x {
  -webkit-mask-image: url("../assets/social/x.svg");
  mask-image: url("../assets/social/x.svg");
}

.sd-inline-triangle {
  display: inline-block;
  flex: 0 0 auto;
  width: .62em;
  height: .78em;
  background: currentColor;
  vertical-align: -.04em;
}

.sd-inline-triangle--right {
  clip-path: polygon(14% 6%, 92% 50%, 14% 94%);
}

.sd-inline-triangle--left {
  clip-path: polygon(86% 6%, 8% 50%, 86% 94%);
}

.sd-button {
  display: inline-flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 28px;
  border: 1px solid var(--yellow);
  background: linear-gradient(135deg, #ffd630, #f59b00);
  color: #061a32;
  font-weight: 900;
  letter-spacing: .08em;
  box-shadow: 0 0 32px rgba(255, 193, 0, .28);
}

.sd-button small {
  font: 700 10px Zen;
  letter-spacing: .08em;
}

.sd-button--small {
  min-width: 180px;
  min-height: 40px;
  padding: 8px 18px;
  font-size: 12px;
}

.sd-button--ghost {
  border-color: #52ccff;
  background: rgba(3, 24, 52, .72);
  color: #e9f9ff;
  box-shadow: none;
}

.sd-button--disabled {
  border-color: #49657c;
  background: rgba(5, 21, 42, .7);
  color: #7f9bb0;
  box-shadow: none;
}

.sd-hero {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-height: 810px;
  height: 100svh;
  max-height: 980px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(2, 22, 63, .08), rgba(0, 35, 88, .18)),
    url("../assets/runtime/bg/menu_back.png") center / cover;
}

.sd-hero::after {
  content: "";
  position: absolute;
  z-index: 5;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(transparent, rgba(1, 8, 22, .94));
  pointer-events: none;
}

.sd-hero__grid {
  position: absolute;
  inset: 70px 0 0;
  background:
    radial-gradient(circle at 50% 46%, transparent 0 18%, rgba(48, 190, 255, .18) 18.3% 18.7%, transparent 19% 28%, rgba(48, 190, 255, .1) 28.2% 28.5%, transparent 29%),
    linear-gradient(90deg, transparent 49.9%, rgba(95, 216, 255, .16) 50%, transparent 50.1%);
  opacity: .82;
}

.sd-hero__frame,
.sd-final__frame {
  position: absolute;
  z-index: 8;
  inset: 78px 12px 14px;
  border: 2px solid rgba(69, 207, 255, .7);
  clip-path: polygon(0 7%, 3% 7%, 3% 0, 97% 0, 97% 7%, 100% 7%, 100% 93%, 97% 93%, 97% 100%, 3% 100%, 3% 93%, 0 93%);
  pointer-events: none;
}

.sd-hero__frame { border-bottom-color: transparent; }

.sd-hero__scanline {
  position: absolute;
  z-index: 9;
  top: 70px;
  bottom: 0;
  width: 2px;
  left: -4%;
  background: linear-gradient(transparent, rgba(139, 235, 255, .95), transparent);
  box-shadow: 0 0 22px rgba(65, 207, 255, .9);
  opacity: 0;
  pointer-events: none;
}

.sd-hero__boot {
  position: absolute;
  z-index: 20;
  left: 50%;
  top: 49%;
  display: grid;
  gap: 8px;
  width: 340px;
  margin: 0;
  padding: 16px 20px;
  transform: translate(-50%, -50%);
  border-block: 1px solid rgba(89, 215, 255, .8);
  background: rgba(1, 16, 42, .74);
  color: #c8f5ff;
  text-align: center;
  font: 14px Orbitron, sans-serif;
  letter-spacing: .2em;
  opacity: 0;
  pointer-events: none;
}

.sd-hero__boot b { color: var(--yellow); font-size: 12px; }

.sd-hero__pilots {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: -90px;
  width: min(760px, 56vw);
  max-height: 100%;
  object-fit: contain;
  transform: translateX(-50%);
  filter: drop-shadow(0 18px 18px rgba(0, 12, 50, .58));
}

.sd-hero__pilots-picture { display: contents; }

.sd-responsive-break { display: none; }
.sd-responsive-hide { display: inline; }

.sd-hero__plane {
  position: absolute;
  z-index: 4;
  object-fit: contain;
  filter: drop-shadow(0 14px 16px rgba(0, 15, 50, .6));
}

.sd-hero__plane--a {
  left: 2%;
  top: 7%;
  width: min(27vw, 380px);
  transform: rotate(-9deg);
}

.sd-hero__plane--b {
  right: 2%;
  top: 6%;
  width: min(26vw, 360px);
  transform: rotate(9deg);
}

.sd-hero__plane--c {
  left: -5%;
  bottom: -5%;
  width: min(33vw, 480px);
  transform: rotate(13deg);
}

.sd-hero__plane--d {
  right: .75%;
  bottom: -5%;
  width: min(32vw, 460px);
  transform: rotate(-17deg);
}

.sd-hero__center {
  position: absolute;
  z-index: 10;
  left: 50%;
  bottom: 10%;
  width: min(680px, 70vw);
  transform: translateX(-50%);
  text-align: center;
  color: #fff;
  text-shadow: 0 3px 24px rgba(0, 20, 60, .85);
}

.sd-hero__logo {
  width: min(620px, 58vw);
  margin: 0 auto -4px;
  filter: drop-shadow(0 8px 12px rgba(0, 20, 70, .65));
}

.sd-hero__descriptor {
  display: block;
  margin-top: -2px;
  font: 700 18px Oswald, sans-serif;
  letter-spacing: .08em;
}

.sd-hero__center p {
  margin: 10px 0 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.65;
}

.sd-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.sd-hero .sd-button { min-width: 230px; }

.sd-scroll {
  position: absolute;
  z-index: 12;
  right: 28px;
  bottom: 22px;
  color: #9fe9ff;
  font: 9px Orbitron;
  letter-spacing: .24em;
}

.sd-section {
  position: relative;
  padding: 72px 5vw;
  overflow: hidden;
  background: linear-gradient(180deg, #eaf7ff, #fff);
}

.sd-anchor-alias {
  position: absolute;
  top: -70px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  pointer-events: none;
}

.sd-section--about {
  background:
    radial-gradient(circle at 50% 25%, rgba(30, 101, 154, .13), transparent 42%),
    rgba(8, 37, 70, .76);
  color: #eefaff;
}

.sd-section--loop { background: linear-gradient(145deg, #f9fdff, #dff3ff); }
.sd-section--modes { background: rgba(8, 37, 70, .76); color: #eefaff; }
.sd-section--aircraft {
  overflow: visible;
  background: rgba(8, 37, 70, .76);
  color: #eefaff;
}
.sd-section--devices { background: linear-gradient(135deg, rgba(6, 26, 51, .8), rgba(11, 49, 84, .72)); color: #eefaff; }
.sd-section--dark { background: #041327; color: #eaf7ff; }
.sd-section--mission { background: linear-gradient(135deg, #03142d, #092b51); color: #eef9ff; }

.sd-section--fog {
  min-height: 760px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse at 30% 45%, rgba(255, 255, 255, .94), rgba(190, 229, 244, .8) 28%, transparent 55%),
    linear-gradient(#56b8ee, #d9f5ff);
  color: #092b48;
}

.sd-section--world { background: rgba(4, 20, 42, .8); color: #eef8ff; }
.sd-section--steam {
  background:
    linear-gradient(105deg, rgba(4, 20, 43, .96) 0 58%, rgba(8, 42, 76, .76)),
    url("../assets/runtime/lp/sky-bg.jpeg") center / cover;
  color: #fff;
}
.sd-section--development { background: linear-gradient(150deg, #f6fbff, #dbeefa); }
.sd-section--faq { background: rgba(5, 25, 49, .84); color: #eefaff; }

.sd-section > .sd-shell {
  position: relative;
  z-index: 2;
}

.sd-decor {
  --decor-opacity: .18;
  --decor-enter-x: 0px;
  --decor-enter-y: 30px;
  position: absolute;
  z-index: 1;
  display: block;
  pointer-events: none;
  opacity: 0;
  filter: blur(8px);
  transform: translate3d(var(--decor-enter-x), var(--decor-enter-y), 0) scale(.95);
  transition:
    opacity .95s cubic-bezier(.2, .72, .2, 1),
    transform 1.15s cubic-bezier(.18, .75, .2, 1),
    filter 1s ease;
}

.sd-section.is-in-view .sd-decor {
  opacity: var(--decor-opacity);
  filter: none;
  transform: translate3d(0, 0, 0) scale(1);
}

.sd-decor img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 24px 34px rgba(0, 5, 18, .42));
  animation: sd-decor-float 8s ease-in-out infinite alternate;
}

.sd-decor--about-alert,
.sd-decor--youtube-alert {
  --decor-opacity: .22;
  --decor-enter-x: 50px;
  top: 44px;
  right: 3vw;
  width: min(42vw, 590px);
  mix-blend-mode: screen;
}

.sd-decor--about-alert img,
.sd-decor--youtube-alert img { animation: sd-alert-breathe 3.8s ease-in-out infinite; }

.sd-decor--modes-boss {
  --decor-opacity: .19;
  --decor-enter-x: 85px;
  top: 0;
  right: -150px;
  width: min(66vw, 920px);
}

.sd-decor--aircraft-thunder {
  --decor-opacity: .14;
  --decor-enter-x: 70px;
  top: -18px;
  right: -100px;
  width: min(49vw, 720px);
}

.sd-decor--devices-drone {
  --decor-opacity: .82;
  --decor-enter-y: -28px;
  z-index: 3;
  top: 34px;
  right: calc(50% - 430px);
  width: min(24vw, 310px);
}

.sd-decor--devices-balloon {
  --decor-opacity: .88;
  --decor-enter-x: 46px;
  z-index: 2;
  top: 22px;
  right: calc(50% - 530px);
  width: min(15vw, 190px);
}

.sd-decor--devices-balloon img { animation-delay: -3.1s; animation-duration: 9.5s; }

.sd-decor--world-island {
  --decor-opacity: .2;
  --decor-enter-x: 52px;
  top: 56px;
  right: -42px;
  width: min(25vw, 350px);
}

.sd-decor--steam-aircraft {
  --decor-opacity: .42;
  --decor-enter-x: 70px;
  top: 90px;
  right: calc(4vw + 100px);
  width: min(36vw, 470px);
}

.sd-decor--steam-aircraft img {
  transform: rotate(-12deg);
  animation: sd-steam-aircraft-float 7.5s ease-in-out infinite alternate;
}

@keyframes sd-decor-float {
  from { transform: translate3d(0, -4px, 0) rotate(-.5deg); }
  to { transform: translate3d(0, 8px, 0) rotate(.7deg); }
}

@keyframes sd-alert-breathe {
  0%, 100% { opacity: .62; filter: drop-shadow(0 0 8px rgba(255, 55, 168, .15)); }
  50% { opacity: 1; filter: drop-shadow(0 0 22px rgba(255, 55, 168, .42)); }
}

@keyframes sd-steam-aircraft-float {
  from { transform: translate3d(0, 1px, 0) rotate(-12deg); }
  to { transform: translate3d(-8px, -8px, 0) rotate(-10.8deg); }
}

.sd-shell {
  width: min(1080px, 100%);
  margin: auto;
}

.sd-shell--narrow {
  width: min(860px, 100%);
  text-align: center;
}

.sd-kicker {
  display: inline-block;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .2em;
}

.sd-chapter {
  margin: 0 0 24px;
  color: #7f9bb0;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .22em;
}

.sd-chapter b { color: #2db9ef; }

.sd-heading {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 52px;
}

.sd-heading--intro { align-items: center; }

.sd-heading.sd-heading--intro h2,
.sd-section--loop .sd-heading h2,
.sd-section--modes .sd-heading h2 {
  font-size: clamp(36px, 3.6vw, 52px);
}

.sd-heading h2,
.sd-section h2 {
  margin: 10px 0 0;
  font-size: clamp(34px, 4.6vw, 68px);
  line-height: 1.12;
  letter-spacing: .01em;
}

.sd-heading > p,
.sd-lead {
  font-size: 17px;
  line-height: 1.95;
  opacity: .82;
}

.sd-heading--figma {
  display: block;
  margin-bottom: 28px;
}

.sd-heading--figma h2 {
  margin: 0 0 6px;
  font-size: clamp(34px, 3.4vw, 48px) !important;
  line-height: 1.22;
  white-space: nowrap;
}

.sd-heading-reveal {
  position: relative;
  width: fit-content;
  max-width: 100%;
  overflow: hidden;
  isolation: isolate;
}

.sd-heading-reveal__text { display: block; }

.sd-motion-ready .sd-heading-reveal { visibility: hidden; }

.sd-motion-ready .sd-heading-reveal.is-reveal-ready {
  visibility: visible;
}

.sd-motion-ready .sd-heading-reveal.is-reveal-ready .sd-heading-reveal__text {
  clip-path: inset(0 100% 0 0);
  transform: translateX(-14px);
}

.sd-motion-ready .sd-heading-reveal.is-reveal-ready::after {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0;
  background: linear-gradient(90deg, #19bff2 0%, #75e6ff 72%, #ffbf18 100%);
  box-shadow: 0 0 26px rgba(44, 207, 255, .34);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.sd-motion-ready .sd-heading-reveal.is-reveal-ready.is-revealed .sd-heading-reveal__text {
  animation: sd-heading-text-reveal .88s .12s cubic-bezier(.76, 0, .24, 1) both;
}

.sd-motion-ready .sd-heading-reveal.is-reveal-ready.is-revealed::after {
  animation: sd-heading-wipe .92s cubic-bezier(.76, 0, .24, 1) both;
}

.sd-heading--figma .sd-kicker {
  display: block;
  margin-bottom: 22px;
  color: #53a7c0;
  font-size: clamp(17px, 1.95vw, 28px);
  letter-spacing: .19em;
}

.sd-heading--figma > p {
  max-width: 1080px;
  margin: 0;
  color: #eefaff;
  font-size: 16px;
  line-height: 1.6;
  opacity: .82;
}

.sd-section--about .sd-chapter,
.sd-section--about .sd-heading--figma,
.sd-section--about .sd-purpose-grid,
.sd-section--about .sd-gameplay--figma,
.sd-section--aircraft .sd-heading--figma,
.sd-section--aircraft .sd-chapter,
.sd-section--world .sd-heading--figma,
.sd-section--world .sd-chapter,
.sd-section--steam .sd-heading--figma,
.sd-section--steam .sd-chapter,
.sd-section--faq .sd-heading--figma,
.sd-section--faq .sd-chapter {
  width: min(900px, 100%);
  margin-inline: auto;
}

.sd-section--world .sd-heading--figma,
.sd-section--world .sd-chapter {
  width: 100%;
}

.sd-section--faq .sd-heading--figma > p { color: #c9e7f7; }
.sd-section--faq .sd-heading--figma .sd-kicker { color: #53a7c0; }

.sd-purpose-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
  margin-top: 30px;
}

.sd-purpose-grid article {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: center;
  gap: 14px;
  min-height: 82px;
  padding: 0;
  background: transparent;
}

.sd-purpose-icon {
  position: static;
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  background: #061a32;
  overflow: hidden;
}

.sd-purpose-icon img {
  width: 100%;
  height: 100%;
  padding: 10px;
  object-fit: contain;
  opacity: .85;
  filter: saturate(.9) drop-shadow(0 0 18px rgba(51, 202, 255, .3));
}

.sd-purpose-icon .sd-purpose-icon__fight,
.sd-purpose-icon .sd-purpose-icon__complete {
  padding: 0;
  max-width: none;
  filter: saturate(.92) contrast(1.04) drop-shadow(0 0 15px rgba(51, 202, 255, .25));
}

.sd-purpose-icon .sd-purpose-icon__fight {
  clip-path: inset(12% 11% 11% 11%);
  transform: scale(1.05);
}

.sd-purpose-icon .sd-purpose-icon__complete {
  clip-path: inset(19% 12% 20% 12%);
  transform: scale(1.2);
}

.sd-purpose-grid strong {
  display: block;
  font-family: Orbitron, sans-serif;
}

.sd-purpose-grid strong { margin: 0 0 5px; font-size: 20px; color: #fff; }
.sd-purpose-grid p { margin: 0; line-height: 1.45; font-size: 13px; color: #bfefff; }

.sd-loop-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.sd-loop-grid li {
  position: relative;
  min-height: 205px;
  padding: 24px 20px;
  border: 1px solid #96cce8;
  border-right: 0;
  background: rgba(255, 255, 255, .82);
}

.sd-loop-grid li:last-child { border-right: 1px solid #96cce8; }
.sd-loop-grid li:not(:last-child)::after {
  content: "";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -9px;
  width: 17px;
  height: 17px;
  border-top: 1px solid #239fd9;
  border-right: 1px solid #239fd9;
  background: #eef9ff;
  transform: translateY(-50%) rotate(45deg);
}

.sd-loop-grid b,
.sd-loop-grid strong,
.sd-loop-grid span { display: block; }
.sd-loop-grid b { font: 11px Orbitron; color: #258fca; }
.sd-loop-grid strong { margin-top: 54px; font: 18px Orbitron; }
.sd-loop-grid span { margin-top: 12px; font-size: 13px; line-height: 1.7; }

.sd-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.sd-mode-grid article {
  position: relative;
  min-height: 347px;
  padding: 0;
  border: 1px solid rgba(78, 207, 255, .58);
  background: rgba(4, 28, 57, .72);
  box-shadow: 0 18px 34px rgba(0, 9, 22, .2);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.sd-mode-grid article:hover {
  transform: translateY(-8px);
  border-color: rgba(116, 228, 255, .95);
  box-shadow: 0 26px 48px rgba(0, 6, 18, .38), 0 0 24px rgba(35, 188, 255, .18);
}

.sd-mode-grid__visual {
  width: 100%;
  height: 198px;
  object-fit: cover;
  transition: transform .7s ease, filter .4s ease;
}

.sd-mode-grid article:hover .sd-mode-grid__visual { transform: scale(1.045); filter: saturate(1.15); }

.sd-mode-grid__copy {
  position: relative;
  min-height: 149px;
  padding: 12px 25px 24px;
  background: linear-gradient(180deg, rgba(4, 25, 52, .9), #041a35);
}

.sd-mode-grid__copy::before {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  width: 84px;
  height: 3px;
  background: var(--yellow);
  box-shadow: 0 0 14px rgba(255, 198, 26, .55);
}

.sd-mode-grid span {
  font: 9px Orbitron;
  color: var(--cyan);
  letter-spacing: .13em;
}

.sd-mode-grid h3 { margin: 8px 0 8px; font-size: 20px; }
.sd-mode-grid p { margin: 0; line-height: 1.5; font-size: 13px; color: #c9efff; }
.sd-tutorial-note { margin: 18px 0 0; padding: 18px 22px; border-left: 3px solid var(--yellow); background: rgba(1, 16, 36, .56); line-height: 1.8; }
.sd-tutorial-note b { font-family: Orbitron, sans-serif; color: var(--yellow); }

.sd-device-intro {
  position: relative;
  min-height: 265px;
  padding-bottom: 38px;
}

.sd-section--devices .sd-chapter,
.sd-section--devices .sd-heading--figma {
  width: min(530px, 100%);
}

.sd-section--devices .sd-heading--figma h2 {
  font-size: clamp(36px, 3.2vw, 48px) !important;
  line-height: 1.18;
}

@media (min-width: 1024px) {
  .sd-section--devices .sd-heading--figma > p {
    width: max-content;
    max-width: none;
    white-space: nowrap;
  }
}

.sd-device-showcase {
  margin-top: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}

.sd-device-showcase__display {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  align-items: center;
  min-height: 400px;
  padding: 20px 0 38px;
}

.sd-device-preview {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 340px;
  padding: 10px 16px 38px;
}

.sd-device-preview::before {
  content: "";
  position: absolute;
  inset: 8% 4% 13%;
  background: radial-gradient(circle, rgba(34, 189, 255, .18), transparent 66%);
  filter: blur(16px);
}

.sd-device-preview__screen {
  position: relative;
  z-index: 1;
  overflow: hidden;
  background: #010817;
  border: 10px solid #08172a;
  box-shadow: 0 0 0 1px #4ecfff, 0 22px 55px rgba(0, 0, 0, .55), 0 0 30px rgba(36, 191, 255, .16);
  transition: width .42s ease, aspect-ratio .42s ease, border-radius .42s ease, opacity .25s ease, transform .42s ease;
}

.sd-device-preview__screen img { display: block; width: 100%; height: 100%; object-fit: cover; }
.sd-device-preview--pc .sd-device-preview__screen { width: min(100%, 630px); aspect-ratio: 1432 / 763; border-radius: 4px; }
.sd-device-preview--tablet .sd-device-preview__screen { width: min(88%, 610px); aspect-ratio: 1107 / 630; border-width: 13px; border-radius: 20px; }
.sd-device-preview--phone .sd-device-preview__screen { width: min(42%, 255px); aspect-ratio: 491 / 762; border-width: 11px; border-radius: 28px; }

.sd-device-preview > span {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  color: rgba(123, 221, 255, .62);
  font: 8px Orbitron, sans-serif;
  letter-spacing: .15em;
  white-space: nowrap;
}

.sd-device-showcase__copy { padding: 12px 0 12px 34px; }
.sd-device-showcase__copy > span { color: #58dbff; font: 10px Orbitron, sans-serif; letter-spacing: .16em; }
.sd-device-showcase__copy h3 { margin: 16px 0 6px; font-size: 43px; line-height: .98; white-space: pre-line; }
.sd-device-showcase__copy b { color: #8ee8ff; font: 11px Orbitron, sans-serif; letter-spacing: .12em; }
.sd-device-showcase__copy p { margin: 22px 0 28px; color: #c8ecfa; font-size: 14px; line-height: 1.9; }
.sd-device-showcase__copy small { display: inline-block; padding: 8px 10px; border: 1px solid rgba(96, 221, 255, .38); color: #70ddff; font: 8px Orbitron, sans-serif; letter-spacing: .13em; }

.sd-device-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(83, 209, 255, .3); }
.sd-device-tabs button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  height: 100px;
  min-height: 100px;
  padding: 12px 18px;
  border: 0;
  border-right: 1px solid rgba(83, 209, 255, .2);
  background: rgba(2, 20, 43, .82);
  color: #d9f7ff;
  cursor: pointer;
  transition: background .25s ease, color .25s ease, box-shadow .25s ease;
}
.sd-device-tabs button:last-child { border-right: 0; }
.sd-device-tabs button:hover { background: rgba(9, 49, 82, .96); }
.sd-device-tabs button.is-active { color: #071a31; background: var(--yellow); box-shadow: inset 0 4px 0 #fff0a2, 0 0 28px rgba(255, 198, 26, .14); }
.sd-device-tabs img { width: 68px; height: 68px; object-fit: contain; filter: drop-shadow(0 0 12px rgba(76, 211, 255, .22)); }
.sd-device-tabs button.is-active img { filter: brightness(.28) saturate(2); }
.sd-device-tabs span, .sd-device-tabs b, .sd-device-tabs small { display: block; text-align: left; font-family: Orbitron, sans-serif; }
.sd-device-tabs b { font-size: 15px; letter-spacing: .08em; }
.sd-device-tabs small { margin-top: 7px; font-size: 7px; letter-spacing: .12em; opacity: .76; }
.sd-device-showcase.is-switching .sd-device-preview__screen { opacity: .22; transform: scale(.97); }

.sd-gameplay { display: block; }

.sd-gameplay--figma { margin-top: 34px; }

.sd-gameplay__screen {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid #46caff;
  background: #03152d;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .38);
}

.sd-gameplay__screen video { width: 100%; height: 100%; object-fit: cover; background: #020b17; }
.sd-gameplay__screen.is-loading video { opacity: .34; }
.sd-gameplay__poster { width: 100%; height: 100%; object-fit: cover; background: #020b17; }
.sd-gameplay__cockpit { position: absolute; z-index: 2; inset: 0; width: 100%; height: 100%; object-fit: fill; opacity: .34; pointer-events: none; mix-blend-mode: screen; }
.sd-gameplay__screen span { position: absolute; left: 18px; top: 16px; padding: 7px 10px; background: #07172c; color: var(--cyan); font: 10px Orbitron; }

.sd-gameplay--figma .sd-gameplay__screen {
  width: min(900px, 100%);
  border-color: rgba(78, 207, 255, .34);
  background: #000;
  box-shadow: none;
}

.sd-gameplay__tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(900px, 100%);
  border: 1px solid rgba(78, 207, 255, .34);
  border-top: 0;
}

.sd-gameplay__tabs button {
  min-height: 52px;
  padding: 10px 12px;
  border: 0;
  border-right: 1px solid rgba(78, 207, 255, .22);
  background: #061a32;
  color: #81bcd2;
  font: 10px Orbitron, sans-serif;
  letter-spacing: .1em;
  cursor: pointer;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease;
}

.sd-gameplay__tabs button:last-child { border-right: 0; }
.sd-gameplay__tabs button:hover { color: #fff; background: #0a2a4d; }
.sd-gameplay__tabs button.is-active { color: #081a31; background: var(--yellow); box-shadow: 0 0 22px rgba(255, 198, 26, .2); }

.sd-stat-grid { display: grid; gap: 12px; }
.sd-stat-grid article { display: grid; place-items: center; background: #0b2948; border: 1px solid #1e6f9f; }
.sd-stat-grid strong { font: 52px Orbitron; color: var(--yellow); }
.sd-stat-grid span { font: 10px Orbitron; color: #9edfff; }

.sd-aircraft-gallery {
  width: min(900px, 100%);
  margin: 36px auto 0;
}

.sd-aircraft-gallery__bar {
  display: grid;
  grid-template-columns: 74px 1fr 74px;
  align-items: stretch;
  min-height: 86px;
  border: 1px solid rgba(83, 209, 255, .42);
  border-bottom-color: rgba(83, 209, 255, .3);
  background: rgba(1, 14, 34, .92);
}

.sd-aircraft-gallery__bar button {
  border: 0;
  background: rgba(10, 47, 82, .82);
  color: #aeeeff;
  font-size: 20px;
  cursor: pointer;
  transition: color .25s ease, background .25s ease;
}

.sd-aircraft-gallery__bar button:hover { color: #06172e; background: var(--yellow); }
.sd-aircraft-gallery__bar > div { display: grid; place-content: center; text-align: center; }
.sd-aircraft-gallery__bar > div,
.sd-aircraft-gallery__copy,
.sd-aircraft-gallery__diagnostics {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .34s ease, transform .42s cubic-bezier(.2,.75,.2,1);
}
.sd-aircraft-gallery__bar span { color: #57d9ff; font: 8px Orbitron, sans-serif; letter-spacing: .18em; }
.sd-aircraft-gallery__bar strong { margin-top: 8px; color: #fff; font: 25px Orbitron, sans-serif; letter-spacing: .22em; }

.sd-aircraft-gallery__main {
  position: relative;
  display: grid;
  grid-template-columns: 46% 54%;
  height: 425px;
  overflow: hidden;
  border: 1px solid rgba(80, 207, 255, .18);
  border-top: 0;
  background:
    linear-gradient(90deg, rgba(4, 31, 61, .98) 0 46%, rgba(3, 23, 45, .9) 62%, rgba(2, 17, 35, .98)),
    #071b32;
  box-shadow: inset 0 0 70px rgba(17, 125, 190, .08);
}

.sd-aircraft-gallery__main::before {
  content: "AIRCRAFT ANALYSIS / SKYDUEL HANGAR";
  position: absolute;
  z-index: 4;
  top: 18px;
  right: 20px;
  color: rgba(105, 221, 255, .5);
  font: 8px Orbitron, sans-serif;
  letter-spacing: .16em;
}

.sd-aircraft-gallery__info {
  position: relative;
  z-index: 3;
  padding: 38px 0 28px 40px;
}

.sd-aircraft-gallery__copy span {
  color: var(--cyan);
  font: 14px Orbitron, sans-serif;
  letter-spacing: .15em;
}

.sd-aircraft-gallery__copy p {
  min-height: 30px;
  margin: 10px 0 0;
  color: #e8f7ff;
  font-size: 17px;
  line-height: 1.6;
}

.sd-aircraft-gallery__diagnostics {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 225px;
  margin-top: 48px;
}

.sd-radar {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 38px;
  transform: scale(1.5);
  transform-origin: center;
}

.sd-radar__ring,
.sd-radar__shape {
  position: absolute;
  inset: 50%;
  transform: translate(-50%, -50%);
  clip-path: polygon(50% 0, 93.3% 25%, 93.3% 75%, 50% 100%, 6.7% 75%, 6.7% 25%);
}

.sd-radar__ring { background: rgba(92, 214, 255, .24); animation: sd-radar-ring-in .72s cubic-bezier(.2,.75,.2,1) both; }
.sd-radar__ring::after { content: ""; position: absolute; inset: 1px; background: #071f3b; clip-path: inherit; }
.sd-radar__ring--outer { width: 112px; height: 112px; animation-delay: .06s; }
.sd-radar__ring--middle { width: 75px; height: 75px; animation-delay: .16s; }
.sd-radar__ring--inner { width: 38px; height: 38px; animation-delay: .26s; }

.sd-radar__spoke {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 50%;
  width: 1px;
  height: 56px;
  background: rgba(92, 214, 255, .2);
  transform: rotate(var(--spoke)) scaleY(1);
  transform-origin: 50% 0;
  animation: sd-radar-spoke-in .58s .18s ease-out both;
}

.sd-radar__shape {
  z-index: 2;
  width: 112px;
  height: 112px;
  background: linear-gradient(145deg, rgba(53, 215, 255, .76), rgba(30, 112, 255, .28));
  border: 1px solid rgba(164, 241, 255, .9);
  filter: drop-shadow(0 0 8px rgba(59, 209, 255, .38));
  transition: clip-path .48s cubic-bezier(.2, .75, .2, 1);
  animation: sd-radar-shape-in .82s .28s cubic-bezier(.18,.78,.2,1) both;
}

.sd-radar__label {
  position: absolute;
  z-index: 3;
  color: #85d9ef;
  font: normal 7px Orbitron, sans-serif;
  letter-spacing: .08em;
  white-space: nowrap;
  animation: sd-radar-label-in .5s .46s ease-out both;
}

.sd-radar__label--speed { left: 50%; top: 10px; transform: translate(-50%, -100%); }
.sd-radar__label--turn { right: -5px; top: 30px; }
.sd-radar__label--armor { right: -9px; bottom: 25px; }
.sd-radar__label--fire { left: 50%; bottom: 10px; transform: translate(-50%, 100%); }
.sd-radar__label--boost { left: -8px; bottom: 25px; }
.sd-radar__label--control { left: -15px; top: 30px; }

.sd-aircraft-gallery__viewer { position: relative; min-width: 0; }

.sd-aircraft-gallery__viewer::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 8% 4%;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 25%, rgba(59, 200, 255, .12) 25.5% 26%, transparent 26.5% 43%, rgba(59, 200, 255, .08) 43.5% 44%, transparent 44.5%),
    linear-gradient(90deg, transparent 49.8%, rgba(59, 200, 255, .13) 50%, transparent 50.2%),
    linear-gradient(transparent 49.8%, rgba(59, 200, 255, .13) 50%, transparent 50.2%);
}

.sd-aircraft-gallery model-viewer,
.sd-aircraft-model-fallback {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  background: transparent;
  --poster-color: transparent;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  transition: opacity .3s ease, transform .45s ease;
}

.sd-aircraft-model-fallback {
  position: absolute;
  inset: 10%;
  display: none;
  width: 80%;
  height: 80%;
  object-fit: contain;
}

.sd-aircraft-gallery[data-render-state="loading"] model-viewer { opacity: 0; }
.sd-aircraft-gallery[data-render-state="ready"] model-viewer { display: block; opacity: 1; }
.sd-aircraft-gallery[data-render-state="fallback"] model-viewer { display: none; }
.sd-aircraft-gallery[data-render-state="fallback"] .sd-aircraft-model-fallback { display: block; }

.sd-aircraft-gallery__scan {
  position: absolute;
  z-index: 2;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.sd-aircraft-gallery__scan::after {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  top: -4px;
  height: 1px;
  background: rgba(98, 224, 255, .8);
  box-shadow: 0 0 12px rgba(45, 194, 255, .9);
  animation: sd-aircraft-scan 4.8s linear infinite;
}

.sd-aircraft-gallery__drag {
  position: absolute;
  z-index: 3;
  right: 18px;
  bottom: 15px;
  color: rgba(122, 218, 244, .66);
  font: 8px Orbitron, sans-serif;
  letter-spacing: .15em;
  pointer-events: none;
}

.sd-aircraft-gallery__thumbs { display: flex; gap: 16px; margin-top: 16px; }

.sd-aircraft-gallery__thumbs button {
  width: 100px;
  height: 100px;
  padding: 8px;
  border: 1px solid transparent;
  background: #061a32;
  cursor: pointer;
  opacity: .52;
  transition: opacity .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.sd-aircraft-gallery__thumbs button:hover { opacity: .82; transform: translateY(-2px); }
.sd-aircraft-gallery__thumbs button.is-active { opacity: 1; border: 2px solid var(--yellow); box-shadow: 0 0 18px rgba(255, 198, 26, .14); }
.sd-aircraft-gallery__thumbs img { width: 100%; height: 100%; object-fit: contain; }

.sd-aircraft-gallery.is-switching model-viewer,
.sd-aircraft-gallery.is-switching .sd-aircraft-model-fallback { opacity: 0; transform: scale(.975); }
.sd-aircraft-gallery.is-switching .sd-aircraft-gallery__bar > div,
.sd-aircraft-gallery.is-switching .sd-aircraft-gallery__copy,
.sd-aircraft-gallery.is-switching .sd-aircraft-gallery__diagnostics {
  opacity: 0;
  transform: translateY(5px);
  transition-duration: .18s;
}
.sd-aircraft-gallery.is-switching .sd-radar__ring { animation: sd-radar-ring-refresh .52s ease-out both; }
.sd-aircraft-gallery.is-switching .sd-radar__shape { animation: sd-radar-shape-refresh .52s cubic-bezier(.18,.78,.2,1) both; }

@keyframes sd-aircraft-scan { from { transform: translateY(0); opacity: 0; } 8%, 88% { opacity: .75; } to { transform: translateY(425px); opacity: 0; } }
@keyframes sd-radar-ring-in { from { opacity: 0; transform: translate(-50%, -50%) scale(.35); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
@keyframes sd-radar-ring-refresh { from { opacity: .18; transform: translate(-50%, -50%) scale(.58); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
@keyframes sd-radar-spoke-in { from { opacity: 0; transform: rotate(var(--spoke)) scaleY(0); } to { opacity: 1; transform: rotate(var(--spoke)) scaleY(1); } }
@keyframes sd-radar-shape-in { from { opacity: 0; transform: translate(-50%, -50%) scale(.18) rotate(-18deg); } to { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(0); } }
@keyframes sd-radar-shape-refresh { from { opacity: .15; transform: translate(-50%, -50%) scale(.48); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
@keyframes sd-radar-label-in { from { opacity: 0; filter: blur(2px); } to { opacity: 1; filter: none; } }

.sd-figma-static .sd-radar__ring,
.sd-figma-static .sd-radar__spoke,
.sd-figma-static .sd-radar__shape,
.sd-figma-static .sd-radar__label {
  animation: none !important;
}

.sd-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.sd-timeline article { position: relative; min-height: 190px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; background: #0a3157; border-top: 3px solid #35c9ff; overflow: hidden; }
.sd-timeline b { font: 30px Orbitron; color: var(--cyan); }
.sd-timeline span { font: 12px Orbitron; }
.sd-timeline img { position: absolute; right: 18px; top: 24px; width: 74px; height: 74px; object-fit: contain; opacity: .28; filter: brightness(2) saturate(.6); }
.sd-timeline article:nth-child(2) img { width: 124px; object-fit: cover; object-position: 75%; clip-path: polygon(25% 0, 100% 0, 100% 100%, 0 100%); }
.sd-timeline__boss { background: linear-gradient(135deg, #4a1234, #a20f65) !important; border-color: #ff46ab !important; }

.sd-lock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 42px; }
.sd-lock-grid article { padding: 28px; background: rgba(3, 30, 60, .78); border: 1px solid #52cfff; color: #fff; }
.sd-lock-grid strong, .sd-lock-grid span { display: block; font-family: Orbitron; }
.sd-lock-grid span { margin-top: 10px; font-size: 10px; color: #a6e9ff; }
.sd-lock-grid img { width: 88px; height: 88px; margin: 0 auto 18px; object-fit: contain; filter: drop-shadow(0 0 18px rgba(56, 208, 255, .35)); }
.sd-lock-grid article:first-child img { padding: 17px; filter: brightness(2) saturate(.3) drop-shadow(0 0 18px rgba(56, 208, 255, .5)); }
.sd-lock-grid__off { border-color: #ff45b2 !important; box-shadow: 0 0 30px rgba(255, 40, 170, .3); }

.sd-world-gallery {
  margin-top: 46px;
  border: 1px solid rgba(83, 209, 255, .42);
  background: rgba(1, 14, 34, .82);
  box-shadow: 0 26px 72px rgba(0, 4, 18, .48), 0 0 46px rgba(34, 176, 255, .08);
  overflow: hidden;
}

.sd-world-gallery__bar {
  display: grid;
  grid-template-columns: 74px 1fr 74px;
  align-items: stretch;
  min-height: 86px;
  border-bottom: 1px solid rgba(83, 209, 255, .3);
}

.sd-world-gallery__bar button {
  border: 0;
  background: rgba(10, 47, 82, .82);
  color: #aeeeff;
  font-size: 20px;
  cursor: pointer;
  transition: color .25s ease, background .25s ease;
}

.sd-world-gallery__bar button:hover { color: #06172e; background: var(--yellow); }
.sd-world-gallery__bar > div { display: grid; place-content: center; text-align: center; }
.sd-world-gallery__bar span { color: #57d9ff; font: 8px Orbitron, sans-serif; letter-spacing: .18em; }
.sd-world-gallery__bar strong { margin-top: 8px; font: 25px Orbitron, sans-serif; letter-spacing: .22em; }

.sd-world-gallery__stage {
  position: relative;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  background: linear-gradient(180deg, #54c6ff 0%, #9eeaff 52%, #dff8ff 100%);
}

.sd-world-gallery__atmosphere {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 19% 74%, rgba(255,255,255,.82), transparent 28%),
    radial-gradient(ellipse at 78% 68%, rgba(255,255,255,.68), transparent 24%),
    linear-gradient(180deg, transparent 58%, rgba(228,249,255,.8));
  transition: background .45s ease, opacity .45s ease;
}

.sd-world-gallery__atmosphere::before,
.sd-world-gallery__atmosphere::after {
  content: "";
  position: absolute;
  width: 36%;
  height: 18%;
  border-radius: 50%;
  background: rgba(255,255,255,.22);
  filter: blur(22px);
  animation: sd-world-cloud 12s ease-in-out infinite alternate;
}
.sd-world-gallery__atmosphere::before { left: -5%; top: 24%; }
.sd-world-gallery__atmosphere::after { right: -8%; top: 42%; animation-delay: -4s; }

.sd-world-gallery[data-world-theme="dusk"] .sd-world-gallery__stage {
  background: linear-gradient(180deg, #fb774d 0%, #ffbc74 46%, #f7d6c2 100%);
}
.sd-world-gallery[data-world-theme="night"] .sd-world-gallery__stage {
  background: radial-gradient(circle at 18% 16%, rgba(206,228,255,.18), transparent 12%), linear-gradient(180deg, #061126 0%, #183256 52%, #3e5471 100%);
}
.sd-world-gallery[data-world-theme="dusk"] .sd-world-gallery__atmosphere { opacity: .56; }
.sd-world-gallery[data-world-theme="night"] .sd-world-gallery__atmosphere { opacity: .3; filter: saturate(.55) brightness(.7); }

.sd-world-gallery__media { position: absolute; z-index: 1; inset: 0; overflow: hidden; transition: opacity .28s ease, transform .45s ease, filter .45s ease; }
.sd-world-gallery__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 56%, rgba(1, 12, 30, .82)); pointer-events: none; }
.sd-world-gallery__media model-viewer,
.sd-world-model-fallback {
  width: 100%;
  height: 100%;
  background: transparent;
  --poster-color: transparent;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  object-fit: cover;
  pointer-events: none;
  transition: filter .45s ease;
}
.sd-world-model-fallback {
  position: absolute;
  inset: 0;
  display: none;
}
.sd-world-gallery[data-render-state="loading"] model-viewer { opacity: 0; }
.sd-world-gallery[data-render-state="ready"] model-viewer { display: block; opacity: 1; }
.sd-world-gallery[data-render-state="fallback"] model-viewer { display: none; }
.sd-world-gallery[data-render-state="fallback"] .sd-world-model-fallback { display: block; }
.sd-world-gallery[data-render-state="fallback"] .sd-world-gallery__media { opacity: 1; transform: none; filter: none; }
.sd-world-gallery[data-render-state="fallback"] .sd-world-gallery__media::after,
.sd-world-gallery[data-render-state="fallback"] .sd-world-gallery__atmosphere,
.sd-world-gallery[data-render-state="fallback"] .sd-world-gallery__scan,
.sd-world-gallery[data-render-state="fallback"] .sd-world-gallery__stage > p { display: none; }
.sd-world-gallery[data-world-theme="dusk"] .sd-world-gallery__media { filter: sepia(.15) saturate(1.18) hue-rotate(-8deg); }
.sd-world-gallery[data-world-theme="night"] .sd-world-gallery__media { filter: brightness(.74) saturate(.78) hue-rotate(8deg); }

.sd-world-gallery__scan { position: absolute; z-index: 2; inset: 0; background: repeating-linear-gradient(180deg, transparent 0 4px, rgba(82, 208, 255, .045) 5px); pointer-events: none; }
.sd-world-gallery__stage > p { position: absolute; z-index: 3; left: 28px; right: 28px; bottom: 20px; margin: 0; color: #daf6ff; font-size: 13px; line-height: 1.7; text-shadow: 0 2px 12px #000; }
.sd-world-gallery.is-switching .sd-world-gallery__media { opacity: .12; transform: scale(.985); }

.sd-world-gallery__tabs { display: grid; grid-template-columns: repeat(3, 1fr); }
.sd-world-gallery__tabs button {
  display: grid;
  grid-template-columns: 92px 1fr;
  align-items: center;
  gap: 18px;
  min-height: 108px;
  padding: 14px 20px;
  border: 0;
  border-right: 1px solid rgba(83, 209, 255, .22);
  background: rgba(3, 24, 49, .94);
  color: #dff8ff;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.sd-world-gallery__tabs button:last-child { border-right: 0; }
.sd-world-gallery__tabs button.is-active { color: #06172e; background: var(--yellow); }
.sd-world-gallery__tabs img { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; opacity: .72; filter: saturate(.82); }
.sd-world-gallery__tabs button.is-active img { opacity: 1; filter: none; }
.sd-world-gallery__tabs span, .sd-world-gallery__tabs b, .sd-world-gallery__tabs small { display: block; text-align: left; font-family: Orbitron, sans-serif; }
.sd-world-gallery__tabs b { font-size: 14px; letter-spacing: .12em; }
.sd-world-gallery__tabs small { margin-top: 6px; font-size: 7px; letter-spacing: .16em; opacity: .7; }

@keyframes sd-world-cloud { from { transform: translateX(-4%) scale(.9); } to { transform: translateX(12%) scale(1.08); } }

.sd-development-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 44px;
}

.sd-development-grid article {
  position: relative;
  min-height: 180px;
  padding: 26px;
  border: 1px solid #93cbe9;
  background: rgba(255, 255, 255, .58);
}

.sd-development-grid b,
.sd-development-grid strong,
.sd-development-grid span { display: block; }
.sd-development-grid b { font: 10px Orbitron; color: #1688c1; }
.sd-development-grid strong { margin-top: 48px; font: 22px Orbitron; }
.sd-development-grid span { margin-top: 10px; font-size: 13px; color: #426980; }

.sd-faq-grid { display: grid; width: min(900px, 100%); gap: 10px; margin: 42px auto 0; }
.sd-faq-grid details {
  min-height: 64px;
  padding: 20px 24px;
  border: 1px solid rgba(86, 205, 255, .2);
  background: rgba(8, 40, 73, .86);
  color: #d9f5ff;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.sd-faq-grid details:hover { border-color: rgba(86, 205, 255, .52); background: rgba(10, 49, 86, .94); transform: translateX(4px); }
.sd-faq-grid details[open] { background: rgba(10, 47, 82, .94); }
.sd-faq-grid summary { color: #e9faff; font: 700 15px Zen, sans-serif; cursor: pointer; }
.sd-faq-grid summary::marker,
.sd-faq-grid summary::-webkit-details-marker { color: var(--cyan); }
.sd-faq-grid details p { margin: 16px 0 0; color: #bfe5f5; line-height: 1.75; }

.sd-final {
  position: relative;
  min-height: 462px;
  overflow: hidden;
  padding: 0 5vw;
  background:
    linear-gradient(90deg, rgba(2, 16, 39, .92) 0 48%, rgba(3, 23, 50, .66)),
    url("../assets/runtime/bg/menu_back.png") center / cover;
  color: #fff;
}

.sd-final::after {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 12, 33, .05), rgba(0, 10, 28, .44));
  pointer-events: none;
}

.sd-final__grid {
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    radial-gradient(circle at 69% 48%, transparent 0 18%, rgba(67, 209, 255, .14) 18.4% 18.8%, transparent 19.2% 27%, rgba(67, 209, 255, .08) 27.4% 27.8%, transparent 28.2%),
    linear-gradient(90deg, transparent 49.9%, rgba(91, 216, 255, .08) 50%, transparent 50.1%);
  opacity: .75;
}

.sd-final__pilots {
  position: absolute;
  z-index: 1;
  left: calc(50% + 50px);
  right: auto;
  bottom: 0;
  width: min(39vw, 460px);
  opacity: 0;
  filter: drop-shadow(0 22px 32px rgba(0, 8, 28, .6));
  transform: translate3d(45px, 24px, 0) scale(.98);
  transition: opacity 1s ease, transform 1.2s cubic-bezier(.18, .75, .2, 1);
}

.sd-final__pilots-picture { display: contents; }

.sd-final.is-in-view .sd-final__pilots { opacity: .94; transform: translate3d(0, 0, 0) scale(1); }

.sd-final__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateY(24px);
  width: min(1040px, 100%);
  min-height: 462px;
  margin: 0 auto;
  padding: 70px 500px 52px 0;
  text-align: center;
}

.sd-final__logo { width: min(100%, 490px); margin-inline: auto; filter: drop-shadow(0 8px 18px rgba(0, 18, 65, .62)); }
.sd-final h2 { width: 100%; margin: 18px auto 24px; font: 700 23px Zen, sans-serif; letter-spacing: .04em; text-align: center; white-space: nowrap; }
.sd-final .sd-button { width: min(400px, 100%); margin-inline: auto; font-size: 21px; }

.sd-motion-ready .sd-section .sd-purpose-grid,
.sd-motion-ready .sd-section .sd-gameplay,
.sd-motion-ready .sd-section .sd-mode-grid,
.sd-motion-ready .sd-section .sd-tutorial-note,
.sd-motion-ready .sd-section .sd-aircraft-gallery,
.sd-motion-ready .sd-section .sd-device-showcase,
.sd-motion-ready .sd-section .sd-world-gallery,
.sd-motion-ready .sd-section--steam .sd-actions,
.sd-motion-ready .sd-section .sd-faq-grid {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s .14s ease, transform .9s .14s cubic-bezier(.18, .75, .2, 1);
}

.sd-motion-ready .sd-section.is-in-view .sd-purpose-grid,
.sd-motion-ready .sd-section.is-in-view .sd-gameplay,
.sd-motion-ready .sd-section.is-in-view .sd-mode-grid,
.sd-motion-ready .sd-section.is-in-view .sd-tutorial-note,
.sd-motion-ready .sd-section.is-in-view .sd-aircraft-gallery,
.sd-motion-ready .sd-section.is-in-view .sd-device-showcase,
.sd-motion-ready .sd-section.is-in-view .sd-world-gallery,
.sd-motion-ready .sd-section--steam.is-in-view .sd-actions,
.sd-motion-ready .sd-section.is-in-view .sd-faq-grid {
  opacity: 1;
  transform: translateY(0);
}

.sd-motion-ready .sd-header { animation: sd-header-in .65s ease-out both; }
.sd-motion-ready .sd-hero__grid { animation: sd-grid-in 1.2s .1s ease-out both, sd-grid-breathe 8s 1.5s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__frame { animation: sd-frame-in .9s .15s ease-out both; }
.sd-motion-ready .sd-hero__pilots { animation: sd-pilots-in 1s .7s cubic-bezier(.18,.75,.24,1) both, sd-pilots-float 7s 1.8s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__plane--a { animation: sd-plane-a-in .9s .25s cubic-bezier(.15,.8,.2,1) both, sd-plane-a-float 6s 1.2s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__plane--b { animation: sd-plane-b-in .9s .38s cubic-bezier(.15,.8,.2,1) both, sd-plane-b-float 6.5s 1.35s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__plane--c { animation: sd-plane-c-in 1s .45s cubic-bezier(.15,.8,.2,1) both, sd-plane-c-float 7s 1.5s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__plane--d { animation: sd-plane-d-in 1s .55s cubic-bezier(.15,.8,.2,1) both, sd-plane-d-float 7.5s 1.65s ease-in-out infinite alternate; }
.sd-motion-ready .sd-hero__center { animation: sd-center-in .9s 1.05s cubic-bezier(.18,.75,.24,1) both; }
.sd-motion-ready .sd-hero__scanline { animation: sd-scan 1.15s .9s ease-in-out both; }
.sd-motion-ready .sd-hero__boot { animation: sd-boot 1.05s .15s ease-in-out both; }

@keyframes sd-header-in { from { transform: translateY(-100%); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes sd-grid-in { from { opacity: 0; transform: scale(1.04); } to { opacity: .82; transform: scale(1); } }
@keyframes sd-grid-breathe { to { opacity: 1; filter: brightness(1.08); } }
@keyframes sd-frame-in { from { opacity: 0; clip-path: inset(48% 50%); } to { opacity: 1; } }
/* Keep the FV bitmap out of filter interpolation. Mobile WebKit can retain the
   low-resolution blur surface after a filled animation has completed. */
@keyframes sd-pilots-in {
  from { opacity: 0; transform: translate(-50%, 36px) scale(.97); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}
@keyframes sd-pilots-float { from { transform: translate(-50%, 0); } to { transform: translate(-50%, -5px); } }
@keyframes sd-plane-a-in { from { opacity: 0; transform: translate(-150px,-50px) rotate(-15deg) scale(.9); } to { opacity: 1; transform: translate(0) rotate(-9deg) scale(1); } }
@keyframes sd-plane-a-float { from { transform: translateY(0) rotate(-9deg); } to { transform: translateY(7px) rotate(-8deg); } }
@keyframes sd-plane-b-in { from { opacity: 0; transform: translate(150px,-50px) rotate(15deg) scale(.9); } to { opacity: 1; transform: translate(0) rotate(9deg) scale(1); } }
@keyframes sd-plane-b-float { from { transform: translateY(0) rotate(9deg); } to { transform: translateY(8px) rotate(8deg); } }
@keyframes sd-plane-c-in { from { opacity: 0; transform: translate(-180px,80px) rotate(18deg) scale(.9); } to { opacity: 1; transform: translate(0) rotate(13deg) scale(1); } }
@keyframes sd-plane-c-float { from { transform: translateY(0) rotate(13deg); } to { transform: translateY(-7px) rotate(14deg); } }
@keyframes sd-plane-d-in { from { opacity: 0; transform: translate(180px,80px) rotate(-22deg) scale(.9); } to { opacity: 1; transform: translate(0) rotate(-17deg) scale(1); } }
@keyframes sd-plane-d-float { from { transform: translateY(0) rotate(-17deg); } to { transform: translateY(-8px) rotate(-16deg); } }
@keyframes sd-center-in { from { opacity: 0; transform: translate(-50%, 22px); filter: blur(5px); } to { opacity: 1; transform: translate(-50%, 0); filter: none; } }
@keyframes sd-scan { 0% { left: -4%; opacity: 0; } 12%, 82% { opacity: .85; } 100% { left: 104%; opacity: 0; } }
@keyframes sd-boot { 0% { opacity: 0; transform: translate(-50%,-50%) scaleX(.2); } 22%, 68% { opacity: 1; transform: translate(-50%,-50%) scaleX(1); } 100% { opacity: 0; transform: translate(-50%,-50%) scaleX(1.04); } }
@keyframes sd-heading-text-reveal {
  0%, 34% { clip-path: inset(0 100% 0 0); transform: translateX(-14px); }
  100% { clip-path: inset(0); transform: translateX(0); }
}
@keyframes sd-heading-wipe {
  0% { transform: scaleX(0); transform-origin: left center; }
  44% { transform: scaleX(1); transform-origin: left center; }
  55% { transform: scaleX(1); transform-origin: right center; }
  100% { transform: scaleX(0); transform-origin: right center; }
}

.sd-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 5vw;
  background: #020c1c;
  color: #7c9cb3;
  font: 9px Orbitron;
}

.sd-footer img { width: 170px; }

.sd-mobile-preview { display: grid; place-items: start center; min-height: 100vh; background: #171c26; padding: 24px; }
.sd-mobile-preview iframe { width: 390px; height: 844px; border: 0; background: #fff; box-shadow: 0 20px 80px #000; }
.sd-card, .sd-index-card { background: #fff; border: 1px solid #9dcced; padding: 24px; }
.sd-index-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.sd-index-page { padding: 60px 5vw; }
.sd-index-page h1 { font: 48px Orbitron; }
.sd-index-page a { color: #087caf; }

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

  .sd-hero__boot,
  .sd-hero__scanline { display: none; }
}

/* Tablet and smartphone only. Desktop (1200px+) intentionally stays identical to the fixed PC layout. */
@media (max-width: 1199px) {
  html, body { overflow-x: clip; }
  .sd-site-motion-bg video,
  .sd-site-motion-bg > img { opacity: .24; }
  .sd-decor { opacity: .12; }
  .sd-header { height: 64px; padding: 0 24px; }
  .sd-header__brand { margin-right: auto; }
  .sd-header .sd-button--small { min-width: 148px; min-height: 42px; }
  .sd-nav { gap: 20px; }
  .sd-nav a { font-size: 8px; }
  .sd-hero { min-height: 760px; height: min(100svh, 860px); }
  .sd-hero__frame { inset: 74px 18px 18px; }
  .sd-hero__pilots { width: min(82vw, 790px); bottom: 22px; }
  .sd-hero__plane { width: min(29vw, 320px); }
  .sd-hero__plane--a { top: 10%; left: -7%; }
  .sd-hero__plane--b { top: 10%; right: -7%; }
  .sd-hero__plane--c { left: -7%; bottom: 5%; }
  .sd-hero__plane--d { right: -7%; bottom: 6%; }
  .sd-hero__center { bottom: 50px; width: min(620px, calc(100% - 48px)); }
  .sd-hero__logo { width: min(58vw, 540px); }
  .sd-hero__center p { font-size: 13px; }
  .sd-hero .sd-actions { justify-content: center; }
  .sd-scroll { display: none; }
  .sd-section { padding: 64px 32px; }
  .sd-shell { width: min(940px, 100%); }
  .sd-heading h2,
  .sd-section h2 { font-size: 42px; }
  .sd-heading--figma h2 { white-space: normal; }
  .sd-heading--figma > p { max-width: 880px; }
  .sd-mode-grid__copy { padding: 18px; }
  .sd-mode-grid h3 { font-size: 18px; }
  .sd-mode-grid p { font-size: 12px; }
  .sd-gameplay--figma .sd-gameplay__screen { max-height: 540px; }
  .sd-aircraft-gallery { width: min(900px, 100%); }
  .sd-aircraft-gallery__main { height: 410px; grid-template-columns: 43% 57%; }
  .sd-aircraft-gallery__info { padding: 30px 18px 18px; }
  .sd-aircraft-gallery__copy p { font-size: 16px; }
  .sd-aircraft-gallery__diagnostics { transform: scale(.88); transform-origin: left top; }
  .sd-aircraft-gallery__viewer { min-width: 0; }
  .sd-device-intro { width: min(900px, 100%); }
  .sd-device-showcase { width: min(900px, 100%); }
  .sd-device-showcase__display { grid-template-columns: minmax(0, 1.55fr) minmax(260px, .85fr); min-height: 450px; padding: 20px; }
  .sd-device-preview { min-height: 400px; padding-inline: 6px; }
  .sd-device-preview--pc .sd-device-preview__screen { width: min(100%, 590px); }
  .sd-device-preview--tablet .sd-device-preview__screen { width: min(92%, 560px); }
  .sd-device-preview--phone .sd-device-preview__screen { width: min(48%, 220px); }
  .sd-device-showcase__copy { padding-left: 24px; }
  .sd-device-showcase__copy h3 { font-size: 38px; }
  .sd-device-showcase__copy p { font-size: 13px; }
  .sd-world-gallery { width: min(900px, 100%); }
  .sd-section--steam .sd-heading--figma { padding-right: min(27vw, 280px); }
  .sd-decor--steam-aircraft { right: 3%; }
  .sd-faq-grid { width: min(860px, 100%); }
  .sd-final { min-height: 430px; }
  .sd-final__content { min-height: 430px; padding-right: 46vw; }
  .sd-final__pilots { left: 51%; width: min(47vw, 440px); }
}

@media (min-width: 701px) and (max-width: 900px) {
  .sd-nav { display: none; }
  .sd-header__brand { margin-right: auto; }
  .sd-hero { min-height: 780px; }
  .sd-hero__pilots { width: min(96vw, 760px); bottom: 62px; }
  .sd-hero__plane--c,
  .sd-hero__plane--d { opacity: .7; }
  .sd-heading h2,
  .sd-section h2 { font-size: 38px; }
  .sd-purpose-grid { gap: 16px; }
  .sd-purpose-grid article { grid-template-columns: 76px 1fr; }
  .sd-purpose-icon { width: 76px; height: 76px; }
  .sd-mode-grid { grid-template-columns: 1fr; }
  .sd-mode-grid article { min-height: 0; display: grid; grid-template-columns: 42% 58%; }
  .sd-mode-grid__visual { min-height: 220px; }
  .sd-aircraft-gallery__main { height: auto; grid-template-columns: 1fr; }
  .sd-aircraft-gallery__info { min-height: 300px; }
  .sd-aircraft-gallery__diagnostics { transform: none; }
  .sd-aircraft-gallery__viewer { min-height: 410px; }
  .sd-device-showcase__display { grid-template-columns: 1fr; padding: 24px; }
  .sd-device-preview { min-height: 430px; }
  .sd-device-showcase__copy { padding: 28px 12px 8px; border-top: 1px solid rgba(80, 211, 255, .2); }
  .sd-world-gallery__stage { aspect-ratio: 4 / 3; }
  .sd-section--steam .sd-heading--figma { padding-right: 0; }
  .sd-decor--steam-aircraft { opacity: .08; }
  .sd-section--steam .sd-actions { flex-direction: column; align-items: center; }
  .sd-section--steam .sd-button { width: min(340px, 100%); min-height: 58px; padding-inline: 16px; font-size: 14px; white-space: nowrap; }
  .sd-section--steam .sd-button--disabled { font-size: 12px; }
  .sd-final { min-height: 430px; padding-inline: 32px; }
  .sd-final__content { min-height: 430px; padding: 60px 48vw 48px 0; transform: none; }
  .sd-final__logo { width: min(44vw, 360px); }
  .sd-final h2 { margin: 16px auto 20px; font-size: clamp(15px, 2.2vw, 18px); white-space: nowrap; }
  .sd-final .sd-button { width: min(340px, 100%); gap: 10px; padding-inline: 16px; font-size: clamp(16px, 2.2vw, 19px); }
  .sd-final .sd-button strong,
  .sd-final .sd-button small { white-space: nowrap; }
  .sd-final .sd-button small { font-size: 9px; }
  .sd-final__pilots { left: 51%; bottom: 0; width: min(48vw, 420px); transform: translate3d(24px, 24px, 0) scale(.98); }
  .sd-final.is-in-view .sd-final__pilots { transform: translate3d(0, 0, 0) scale(1); opacity: .94; }
}

@media (max-width: 700px) {
  .sd-site-motion-bg video,
  .sd-site-motion-bg > img { opacity: .12; }
  .sd-decor { display: none; }
  .sd-header { height: 56px; padding: 0 14px; }
  .sd-header__brand { font-size: 22px; }
  .sd-nav { display: none; }
  .sd-header .sd-button--small { min-width: 108px; min-height: 38px; padding: 0 12px; font-size: 9px; }
  .sd-hero { min-height: 760px; height: 100svh; max-height: 820px; }
  .sd-hero__frame { inset: 64px 10px 10px; }
  .sd-hero__pilots { width: 126vw; max-width: none; bottom: 132px; }
  .sd-hero__plane { width: 48vw; opacity: .78; }
  .sd-hero__plane--a { top: 10%; left: -18%; }
  .sd-hero__plane--b { top: 11%; right: -18%; }
  .sd-hero__plane--c,
  .sd-hero__plane--d { display: none; }
  .sd-hero__center { bottom: 38px; width: calc(100% - 30px); }
  .sd-hero__logo { width: min(92vw, 410px); }
  .sd-hero__center p { margin: 8px auto 14px; font-size: 11px; line-height: 1.65; }
  .sd-hero__center p br { display: none; }
  .sd-hero .sd-actions { gap: 8px; flex-direction: row; align-items: stretch; }
  .sd-hero .sd-button { min-width: 0; width: 50%; min-height: 48px; padding: 0 10px; font-size: 10px; }
  .sd-scroll { display: none; }
  .sd-section { padding: 32px 18px; }
  .sd-shell { width: 100%; }
  .sd-chapter { font-size: 9px; }
  .sd-heading { grid-template-columns: 1fr; gap: 14px; }
  .sd-heading h2,
  .sd-section h2 { font-size: clamp(28px, 8.5vw, 34px); line-height: 1.25; }
  .sd-heading--figma .sd-kicker { margin-top: 8px; font-size: 18px; line-height: 1.2; }
  .sd-heading--figma > p { margin-top: 20px; font-size: 13px; line-height: 1.85; }
  .sd-purpose-grid,
  .sd-mode-grid,
  .sd-lock-grid,
  .sd-development-grid,
  .sd-loop-grid { grid-template-columns: 1fr; }
  .sd-purpose-grid { gap: 10px; }
  .sd-purpose-grid article { min-height: 92px; grid-template-columns: 76px 1fr; }
  .sd-purpose-icon { width: 76px; height: 76px; }
  .sd-purpose-grid strong { font-size: 17px; }
  .sd-purpose-grid p { font-size: 12px; }
  .sd-gameplay--figma { margin-top: 28px; }
  .sd-gameplay__screen { aspect-ratio: 16 / 9; }
  .sd-gameplay__screen span { left: 8px; top: 8px; padding: 5px 7px; font-size: 7px; }
  .sd-gameplay__tabs { grid-template-columns: 1fr 1fr; }
  .sd-gameplay__tabs button { min-height: 48px; font-size: 12px; border-bottom: 1px solid rgba(77, 205, 255, .22); }
  .sd-mode-grid { gap: 14px; }
  .sd-mode-grid article { min-height: 0; }
  .sd-mode-grid__visual { min-height: 210px; }
  .sd-mode-grid__copy { min-height: 142px; padding: 16px 18px 20px; }
  .sd-mode-grid h3 { font-size: 19px; }
  .sd-mode-grid p { font-size: 12px; }
  .sd-tutorial-note { font-size: 11px; }
  .sd-aircraft-gallery__bar,
  .sd-world-gallery__bar { grid-template-columns: 48px 1fr 48px; }
  .sd-aircraft-gallery__bar {
    min-height: 70px;
    height: 70px;
  }
  .sd-world-gallery__bar {
    min-height: 70px;
    height: 70px;
  }
  .sd-aircraft-gallery__bar button,
  .sd-world-gallery__bar button { min-height: 68px; }
  .sd-aircraft-gallery__bar span,
  .sd-world-gallery__bar span { font-size: 7px; }
  .sd-aircraft-gallery__bar strong,
  .sd-world-gallery__bar strong { margin-top: 5px; font-size: 15px; letter-spacing: .15em; }
  .sd-aircraft-gallery__main { grid-template-columns: 1fr; height: auto; }
  .sd-aircraft-gallery__viewer { order: 1; }
  .sd-aircraft-gallery__info { order: 2; min-height: 286px; padding: 16px 16px 24px; }
  .sd-aircraft-gallery__copy p { margin-top: 10px; font-size: 14px; line-height: 1.55; }
  .sd-aircraft-gallery__diagnostics { grid-template-columns: 1fr; justify-items: center; transform: none; margin-top: 14px; }
  .sd-aircraft-gallery__viewer { min-height: 310px; }
  .sd-aircraft-gallery model-viewer { min-height: 310px; }
  .sd-aircraft-gallery__drag { right: 12px; bottom: 10px; font-size: 7px; }
  .sd-aircraft-gallery__thumbs { gap: 6px; margin-top: 8px; }
  .sd-aircraft-gallery__thumbs button { width: calc((100% - 18px) / 4); height: auto; aspect-ratio: 1; }
  .sd-device-intro { margin-bottom: 0; padding-bottom: 0; }
  .sd-section--devices .sd-heading--figma h2 { font-size: clamp(28px, 7.7vw, 31px) !important; }
  .sd-device-showcase { display: flex; flex-direction: column; }
  .sd-device-tabs { order: 1; }
  .sd-device-showcase__display { order: 2; grid-template-columns: 1fr; min-height: 0; padding: 18px 12px 24px; }
  .sd-device-preview { order: 2; min-height: 290px; padding-inline: 4px; }
  .sd-device-preview--pc .sd-device-preview__screen,
  .sd-device-preview--tablet .sd-device-preview__screen { width: 100%; border-width: 6px; border-radius: 10px; }
  .sd-device-preview--phone .sd-device-preview__screen { width: min(58%, 205px); border-width: 8px; border-radius: 22px; }
  .sd-device-preview > span { bottom: 7px; font-size: 7px; }
  .sd-device-showcase__copy { order: 1; padding: 24px 8px 4px; border-top: 0; border-left: 0; text-align: center; }
  .sd-device-showcase__copy h3 { margin-top: 12px; font-size: 34px; }
  .sd-device-showcase__copy p { margin: 16px auto 20px; max-width: 31em; font-size: 12px; line-height: 1.8; }
  .sd-device-tabs button { height: 70px; min-height: 70px; padding: 6px 4px; gap: 2px; flex-direction: column; justify-content: center; }
  .sd-device-tabs img { width: 42px; height: 42px; }
  .sd-device-tabs span,
  .sd-device-tabs b,
  .sd-device-tabs small { text-align: center; }
  .sd-device-tabs b { font-size: 9px; line-height: 1.15; }
  .sd-device-tabs small { display: none; }
  .sd-world-gallery__stage { aspect-ratio: 4 / 3; min-height: 330px; }
  .sd-world-gallery__stage > p { left: 14px; right: 14px; bottom: 12px; font-size: 10px; }
  .sd-world-gallery__media model-viewer,
  .sd-world-model-fallback { width: 100%; height: 100%; }
  .sd-world-gallery__tabs button { grid-template-columns: 1fr; gap: 6px; min-height: 98px; padding: 8px 4px; }
  .sd-world-gallery__tabs img { width: 48px; height: 48px; margin: 0 auto; }
  .sd-world-gallery__tabs span,
  .sd-world-gallery__tabs b,
  .sd-world-gallery__tabs small { text-align: center; }
  .sd-world-gallery__tabs b { font-size: 9px; }
  .sd-world-gallery__tabs small { font-size: 6px; }
  .sd-section--steam .sd-heading--figma { padding-right: 0; }
  .sd-section--steam .sd-actions { flex-direction: column; align-items: center; }
  .sd-section--steam .sd-button { width: min(295px, 100%); min-height: 44px; padding: 10px 12px; font-size: 13px; white-space: nowrap; }
  .sd-section--steam .sd-button--disabled { font-size: 11px; }
  .sd-faq-grid { margin-top: 28px; }
  .sd-faq-grid details { min-height: 58px; padding: 17px 16px; }
  .sd-faq-grid summary { font-size: 13px; }
  .sd-final { min-height: 560px; padding-inline: 18px; }
  .sd-final__content { min-height: 560px; padding: 54px 0 270px; transform: none; }
  .sd-final__logo { width: min(88vw, 390px); }
  .sd-final h2 { margin: 14px auto 18px; font-size: 18px; white-space: normal; }
  .sd-final .sd-button { width: 100%; min-height: 58px; font-size: 16px; }
  .sd-final__pilots { left: 50%; right: auto; bottom: -180px; width: min(105vw, 470px); transform: translate3d(-50%, 24px, 0) scale(.98); opacity: 0; }
  .sd-final.is-in-view .sd-final__pilots { opacity: .58; transform: translate3d(-50%, 0, 0) scale(1); }
  .sd-footer { flex-direction: column; gap: 14px; padding: 24px 18px; text-align: center; }
  .sd-index-grid { grid-template-columns: 1fr; }
}

/* ================================================================
   RESPONSIVE DESIGN SYSTEM v1.0
   SPで確定した余白と操作列を基準に、TBは画面幅でPC/SP型を切替。
   ================================================================ */
model-viewer:not(:defined) {
  display: block;
}

model-viewer:not(:defined) > .sd-aircraft-model-poster,
model-viewer:not(:defined) > .sd-world-model-poster {
  display: block;
  width: 100%;
  height: 100%;
}

@media (min-width: 1200px) {
  .sd-section {
    padding-block: var(--sd-space-section-pc);
  }
}

@media (min-width: 701px) and (max-width: 1199px) {
  .sd-section {
    padding: var(--sd-space-section-tb) var(--sd-gutter-tb);
  }

  .sd-device-intro {
    padding: 0;
  }

  .sd-aircraft-gallery__bar,
  .sd-world-gallery__bar {
    min-height: var(--sd-control-row-h);
  }

  .sd-aircraft-gallery__bar button,
  .sd-world-gallery__bar button,
  .sd-device-tabs button {
    min-height: var(--sd-control-row-h);
    height: var(--sd-control-row-h);
  }
}

@media (min-width: 901px) and (max-width: 1199px) {
  .sd-hero__pilots {
    width: min(73.8vw, 711px);
    bottom: -50px;
  }

  .sd-decor--devices-drone {
    top: 28px;
    right: clamp(150px, 18vw, 216px);
    width: min(22vw, 250px);
  }

  .sd-decor--devices-balloon {
    top: 18px;
    right: 58px;
    width: min(14vw, 168px);
  }

  .sd-section--steam .sd-actions {
    flex-wrap: nowrap;
  }

  .sd-section--steam .sd-button {
    width: min(400px, calc(50% - 7px));
    padding-inline: 16px;
    font-size: 14px;
    white-space: nowrap;
  }

  .sd-section--steam .sd-button--disabled {
    font-size: 12px;
  }

  .sd-aircraft-gallery__main {
    grid-template-columns: 43% 57%;
    height: 410px;
  }

  .sd-device-showcase__display {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, .85fr);
    padding: 20px;
  }

  .sd-world-gallery__stage {
    aspect-ratio: 16 / 9;
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .sd-decor--devices-drone {
    top: 30px;
    right: 120px;
    width: min(25vw, 210px);
  }

  .sd-decor--devices-balloon {
    top: 18px;
    right: 28px;
    width: min(17vw, 145px);
  }

  .sd-aircraft-gallery__bar,
  .sd-world-gallery__bar {
    grid-template-columns: 56px 1fr 56px;
  }

  .sd-aircraft-gallery__main {
    height: auto;
    grid-template-columns: 1fr;
  }

  .sd-aircraft-gallery__viewer {
    order: 1;
    min-height: 390px;
  }

  .sd-aircraft-gallery__info {
    order: 2;
    min-height: 300px;
    padding: 24px;
  }

  .sd-device-showcase__display {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .sd-device-showcase__copy {
    order: 1;
    border: 0;
    text-align: center;
  }

  .sd-device-preview {
    order: 2;
  }

  .sd-world-gallery__stage {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 700px) {
  .sd-section {
    padding: var(--sd-space-section-sp) var(--sd-gutter-sp);
  }
}

@media (max-width: 1199px) {
  .sd-responsive-break { display: block; }
  .sd-responsive-hide { display: none; }
}

/* Responsive FV — Figma/exported comps 14:18 (SP) and 14:56 (TB).
   Header is intentionally excluded from these coordinates. Desktop remains fixed. */
@media (min-width: 701px) and (max-width: 900px) and (orientation: portrait) {
  .sd-hero {
    min-height: 1048px;
    height: calc(100svh - 64px);
    max-height: none;
  }

  .sd-hero__frame { inset: 64px 0 0; }
  .sd-hero__grid { inset: 64px 0 0; }
  .sd-hero::after { height: 29%; }

  .sd-hero__pilots {
    top: 142px;
    bottom: auto;
    width: min(78vw, 650px);
    max-height: none;
  }

  .sd-hero__plane {
    z-index: 2;
    opacity: 1;
  }
  .sd-hero__pilots { z-index: 3; }
  .sd-hero__plane--a {
    top: 61px;
    left: -8%;
    width: min(54vw, 450px);
  }
  .sd-hero__plane--b {
    top: 58px;
    right: -9%;
    width: min(53vw, 442px);
  }
  .sd-hero__plane--c {
    display: block;
    left: -14%;
    bottom: -3%;
    width: min(58vw, 485px);
  }
  .sd-hero__plane--d {
    display: block;
    right: -14%;
    bottom: -3%;
    width: min(58vw, 485px);
  }

  .sd-hero__center {
    top: 615px;
    bottom: auto;
    width: min(620px, calc(100% - 80px));
  }

  .sd-hero__logo { width: min(72vw, 600px); }
  .sd-hero__center p {
    margin: 10px auto 14px;
    font-size: 13px;
    line-height: 1.55;
  }
  .sd-hero .sd-actions {
    width: min(514px, 68vw);
    margin: 14px auto 0;
    flex-direction: column;
    gap: 10px;
  }
  .sd-hero .sd-button {
    width: 100%;
    min-height: 71px;
    font-size: 15px;
  }
}

@media (max-width: 700px) {
  .sd-hero {
    min-height: 754px;
    height: calc(100svh - 56px);
    max-height: none;
  }

  .sd-hero__frame { inset: 56px 0 0; }
  .sd-hero__grid { inset: 56px 0 0; }
  .sd-hero::after { height: 30%; }

  .sd-hero__pilots {
    top: 140px;
    bottom: auto;
    width: min(100vw, 430px);
    max-width: none;
    max-height: none;
  }

  .sd-hero__plane {
    z-index: 2;
    opacity: 1;
  }
  .sd-hero__pilots { z-index: 3; }
  .sd-hero__plane--a {
    top: 58px;
    left: -16%;
    width: 58vw;
  }
  .sd-hero__plane--b {
    top: 57px;
    right: -18%;
    width: 58vw;
  }
  .sd-hero__plane--c {
    display: block;
    left: -17%;
    bottom: -1%;
    width: 62vw;
    opacity: .9;
  }
  .sd-hero__plane--d {
    display: block;
    right: -18%;
    bottom: -1%;
    width: 62vw;
    opacity: .9;
  }

  .sd-hero__center {
    top: 425px;
    bottom: auto;
    width: calc(100% - 30px);
  }
  .sd-hero__logo { width: min(97vw, 420px); }
  .sd-hero__center p {
    width: calc(100% - 20px);
    margin: 7px auto 11px;
    font-size: 10px;
    line-height: 1.55;
  }
  .sd-hero__center p br { display: block; }
  .sd-hero .sd-actions {
    width: min(320px, calc(100% - 20px));
    margin: 10px auto 0;
    flex-direction: column;
    gap: 6px;
  }
  .sd-hero .sd-button {
    width: 100%;
    min-height: 49px;
    padding: 0 12px;
    font-size: 12px;
  }
}

/* SP final CTA — canonical 375 x 460 composition. Desktop and tablet stay unchanged. */
@media (max-width: 700px) {
  .sd-sp-break { display: block; }

  .sd-heading--figma h2 {
    font-size: 30px !important;
    letter-spacing: -.02em;
  }

  .sd-world-gallery__stage {
    width: 100%;
    height: 330px;
    min-height: 330px;
    aspect-ratio: auto;
  }

  .sd-world-gallery__stage > p {
    white-space: normal;
    overflow-wrap: anywhere;
    line-height: 1.55;
  }

  .sd-final {
    height: 460px;
    min-height: 460px;
    padding: 0;
  }

  .sd-final__pilots {
    top: 8px;
    bottom: auto;
    left: calc(50% - 12px);
    width: min(100%, 375px);
    opacity: 0;
    transform: translate3d(-50%, 16px, 0) scale(.985);
  }

  .sd-final.is-in-view .sd-final__pilots {
    opacity: .96;
    transform: translate3d(-50%, 0, 0) scale(1);
  }

  .sd-final__content {
    position: relative;
    width: 100%;
    height: 460px;
    min-height: 460px;
    padding: 0;
  }

  .sd-final__logo {
    position: absolute;
    top: 255px;
    left: 50%;
    width: min(calc(100% - 36px), 339px);
    transform: translateX(-50%);
  }

  .sd-final h2 {
    position: absolute;
    top: 356px;
    left: 0;
    width: 100%;
    margin: 0;
    padding: 0 18px;
    font-size: 15px !important;
    line-height: 1.4;
    white-space: nowrap;
  }

  .sd-final .sd-button {
    position: absolute;
    top: 389px;
    left: 50%;
    width: min(calc(100% - 48px), 295px);
    min-height: 44px;
    margin: 0;
    transform: translateX(-50%);
    font-size: 15px;
  }
}

@media (min-width: 481px) and (max-width: 700px) {
  .sd-final__pilots {
    left: calc(50% - 4px);
  }
}

/* Information / official channels / YouTube — 2026-08-23 */
.sd-section--information,
.sd-section--youtube {
  color: #eefaff;
}

.sd-section--information {
  background:
    linear-gradient(110deg, rgba(2, 13, 31, .97), rgba(5, 35, 67, .92)),
    url("../assets/runtime/bg/fv_back.png") center / cover;
}

.sd-section--youtube {
  background:
    radial-gradient(circle at 82% 15%, rgba(29, 187, 245, .16), transparent 26rem),
    linear-gradient(145deg, rgba(5, 25, 49, .96), rgba(6, 43, 78, .92));
}

.sd-section--information .sd-heading--figma,
.sd-section--information .sd-chapter,
.sd-section--youtube .sd-heading--figma,
.sd-section--youtube .sd-chapter {
  width: 100%;
}

.sd-section--youtube .sd-heading--figma,
.sd-section--youtube .sd-chapter,
.sd-section--youtube .sd-youtube-feature,
.sd-section--youtube .sd-youtube-grid,
.sd-section--youtube .sd-youtube-channel-cta {
  position: relative;
  z-index: 2;
}

.sd-information-layout { display: block; }

.sd-information-list {
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(102, 221, 255, .4);
}

.sd-information-list li {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  min-height: 76px;
  padding: 16px 14px;
  border-bottom: 1px solid rgba(102, 221, 255, .2);
}

.sd-information-list time {
  color: #67d9ff;
  font: 700 12px Orbitron, sans-serif;
  letter-spacing: .08em;
}

.sd-information-list a {
  color: #f4fbff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  transition: color 160ms ease, transform 160ms ease;
}

.sd-information-list a:hover {
  color: var(--cyan);
}

.sd-information-more,
.sd-info-back {
  margin-top: 24px;
  text-align: right;
}

.sd-information-more a,
.sd-info-back a {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: #9de8ff;
  font-weight: 700;
}

.sd-information-more a:hover,
.sd-info-back a:hover {
  color: #fff;
}

.sd-info-main {
  min-height: calc(100vh - 96px);
  padding-top: 70px;
}

.sd-info-archive {
  min-height: calc(100vh - 166px);
  padding-top: clamp(76px, 8vw, 120px);
  background:
    radial-gradient(circle at 82% 10%, rgba(29, 187, 245, .18), transparent 28rem),
    linear-gradient(110deg, rgba(2, 13, 31, .97), rgba(5, 35, 67, .94));
  color: #eefaff;
}

.sd-info-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 56px;
  align-items: end;
  margin-bottom: 44px;
}

.sd-info-heading h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 4.6vw, 64px);
  line-height: 1.14;
}

.sd-info-heading p {
  margin: 0;
  color: #c9e7f7;
  font-size: 15px;
  line-height: 1.85;
}

.sd-info-status {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
  color: #67d9ff;
  font: 700 11px Orbitron, sans-serif;
  letter-spacing: .12em;
}

.sd-info-pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 36px;
}

.sd-info-pagination a,
.sd-info-pagination span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(102, 221, 255, .34);
  color: #a8eaff;
  font: 700 12px Orbitron, sans-serif;
}

.sd-info-pagination a:hover,
.sd-info-pagination .is-current {
  border-color: var(--cyan);
  background: rgba(40, 179, 226, .18);
  color: #fff;
}

.sd-youtube-feature__copy > span,
.sd-youtube-card__copy small {
  color: #62d9ff;
  font: 700 11px Orbitron, sans-serif;
  letter-spacing: .16em;
}

.sd-youtube-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.48fr) minmax(300px, .72fr);
  overflow: hidden;
  border: 1px solid rgba(102, 221, 255, .42);
  background: rgba(2, 16, 34, .76);
  box-shadow: 0 30px 80px rgba(0, 6, 18, .35);
}

.sd-youtube-feature__player {
  aspect-ratio: 16 / 9;
  background: #020915;
}

.sd-youtube-feature__player iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.sd-youtube-feature__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 20px;
}

.sd-youtube-feature__copy h3 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 2.25vw, 34px);
  line-height: 1.22;
  white-space: nowrap;
}

.sd-youtube-feature__copy p {
  margin: 0;
  color: #cde8f5;
  font-size: 14px;
  line-height: 1.85;
}

.sd-actions--start {
  justify-content: flex-start;
  margin-top: 24px;
}

.sd-actions--start .sd-button {
  min-height: 48px;
  padding: 10px 16px;
  font-size: 11px;
}

.sd-youtube-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.sd-youtube-card {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(220px, .82fr);
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(102, 221, 255, .26);
  background: rgba(3, 20, 40, .76);
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.sd-youtube-card:hover {
  border-color: rgba(102, 221, 255, .75);
  background: rgba(7, 40, 72, .92);
  transform: translateY(-2px);
}

.sd-youtube-card__thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #020915;
}

.sd-youtube-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 250ms ease;
}

.sd-youtube-card:hover .sd-youtube-card__thumb img {
  transform: scale(1.025);
}

.sd-youtube-card__thumb i {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 3px 6px;
  background: rgba(0, 5, 13, .9);
  color: #fff;
  font: 700 11px Orbitron, sans-serif;
  font-style: normal;
}

.sd-youtube-card__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 20px;
}

.sd-youtube-card__copy b {
  margin-top: 10px;
  color: #f5fbff;
  font: 800 clamp(16px, 1.6vw, 22px) Orbitron, sans-serif;
  line-height: 1.35;
}

.sd-youtube-card__copy em {
  margin-top: 8px;
  color: #b9d8e7;
  font-size: 13px;
  font-style: normal;
}

.sd-youtube-channel-cta {
  margin-top: 26px;
  text-align: right;
}

.sd-youtube-channel-cta a {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: #9de8ff;
  font-weight: 700;
}

.sd-youtube-channel-cta a:hover {
  color: #fff;
}

.sd-footer nav {
  display: flex;
  gap: 16px;
}

.sd-footer nav a {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #9edaf3;
}

.sd-footer nav a:hover {
  color: #fff;
}

@media (max-width: 1199px) {
  .sd-youtube-feature {
    grid-template-columns: 1fr;
  }

  .sd-youtube-feature__copy {
    padding: 20px;
  }

  .sd-youtube-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .sd-info-main { padding-top: 56px; }

  .sd-info-archive {
    min-height: calc(100vh - 56px);
    padding-top: 58px;
  }

  .sd-info-heading {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 34px;
  }

  .sd-info-heading h1 {
    font-size: clamp(28px, 8.6vw, 34px);
    white-space: nowrap;
  }

  .sd-info-heading p {
    font-size: 13px;
  }

  .sd-info-status {
    font-size: 9px;
  }

  .sd-information-list li {
    grid-template-columns: 1fr;
    gap: 6px;
    min-height: 0;
    padding: 15px 4px;
  }

  .sd-information-list time {
    font-size: 10px;
  }

  .sd-information-list a {
    font-size: 13px;
  }

  .sd-information-more,
  .sd-info-back {
    text-align: left;
  }

  .sd-youtube-grid {
    grid-template-columns: 1fr;
  }

  .sd-youtube-feature__copy {
    padding: 24px 18px;
  }

  .sd-actions--start {
    flex-direction: column;
  }

  .sd-actions--start .sd-button {
    width: 100%;
  }

  .sd-youtube-grid {
    gap: 16px;
    margin-top: 16px;
  }

  .sd-youtube-card {
    grid-template-columns: 46% 54%;
  }

  .sd-youtube-card__copy {
    padding: 12px;
  }

  .sd-youtube-card__copy small {
    font-size: 8px;
  }

  .sd-youtube-card__copy b {
    margin-top: 6px;
    font-size: 14px;
  }

  .sd-youtube-card__copy em {
    margin-top: 4px;
    font-size: 10px;
  }

  .sd-youtube-channel-cta {
    text-align: left;
  }
}

/* Five-mode carousel — full-bleed, circular production v1.3.3 */
.sd-mode-carousel {
  --mode-gap: 16px;
  --mode-visible: 5;
  position: relative;
  width: 100vw;
  margin-top: 34px;
  margin-left: calc(50% - 50vw);
  padding: 0 112px;
}

.sd-mode-carousel__viewport {
  --mode-edge-fade: clamp(0px, calc(50% - 541px), 84px);
  width: 100%;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 var(--mode-edge-fade), #000 calc(100% - var(--mode-edge-fade)), transparent 100%);
  mask-image: linear-gradient(to right, transparent 0, #000 var(--mode-edge-fade), #000 calc(100% - var(--mode-edge-fade)), transparent 100%);
}

.sd-mode-carousel__track.sd-mode-grid {
  display: flex;
  gap: var(--mode-gap);
  width: 100%;
  padding: 8px 0 16px;
  grid-template-columns: none;
  touch-action: pan-y;
  user-select: none;
  will-change: transform;
  transition: transform 420ms cubic-bezier(.22, .78, .2, 1);
}

.sd-mode-carousel__track.sd-mode-grid.is-instant {
  transition: none;
}

.sd-mode-carousel__track.sd-mode-grid article {
  display: block;
  flex: 0 0 350px;
  min-width: 0;
  min-height: 0;
  opacity: .72;
  transform: none;
  transition: opacity 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.sd-mode-carousel__track.sd-mode-grid article:hover {
  transform: none;
}

.sd-mode-carousel__track.sd-mode-grid article.is-active {
  opacity: 1;
  border-color: rgba(255, 206, 50, .94);
  box-shadow: 0 24px 52px rgba(0, 6, 18, .42), 0 0 26px rgba(255, 206, 50, .16);
}

.sd-mode-carousel__track .sd-mode-grid__visual {
  width: 100%;
  height: 198px;
  min-height: 0;
  aspect-ratio: auto;
}

.sd-mode-carousel__track .sd-mode-grid__copy {
  min-height: 149px;
  padding: 12px 25px 24px;
}

.sd-mode-carousel__button {
  position: absolute;
  z-index: 4;
  top: calc(50% - 18px);
  display: grid;
  width: 36px;
  height: 52px;
  padding: 0;
  border: 1px solid rgba(96, 219, 255, .65);
  background: rgba(1, 16, 36, .9);
  cursor: pointer;
  place-items: center;
  transform: translateY(-50%);
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.sd-mode-carousel__button::before {
  content: "";
  width: 11px;
  height: 15px;
  background: #dff8ff;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  transition: background 160ms ease, transform 160ms ease;
}

.sd-mode-carousel__button--prev { left: 40px; }
.sd-mode-carousel__button--prev::before { transform: rotate(180deg); }
.sd-mode-carousel__button--next { right: 40px; }

.sd-mode-carousel__button:hover {
  border-color: rgba(255, 206, 50, .95);
  background: rgba(5, 40, 72, .96);
  box-shadow: 0 0 24px rgba(62, 211, 255, .16);
}

.sd-mode-carousel__button:hover::before {
  background: var(--yellow);
}

.sd-mode-carousel__dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 24px;
  margin-top: 10px;
}

.sd-mode-carousel__dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(126, 220, 247, .38);
  cursor: pointer;
  transition: width 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.sd-mode-carousel__dot.is-active {
  width: 28px;
  background: var(--yellow);
  box-shadow: 0 0 14px rgba(255, 206, 50, .38);
}

@media (max-width: 1199px) {
  .sd-mode-carousel {
    padding-inline: 80px;
  }

  .sd-mode-carousel__track.sd-mode-grid article {
    flex-basis: 350px;
  }

  .sd-mode-carousel__viewport {
    --mode-edge-fade: 36px;
  }

  .sd-mode-carousel__button--prev { left: 40px; }
  .sd-mode-carousel__button--next { right: 40px; }
}

@media (max-width: 700px) {
  .sd-mode-carousel {
    --mode-gap: 12px;
    --mode-visible: 1;
    padding-inline: 0;
  }

  .sd-mode-carousel__track.sd-mode-grid article {
    flex-basis: min(350px, calc(100vw - 64px));
  }

  .sd-mode-carousel__viewport {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .sd-mode-carousel__track .sd-mode-grid__copy {
    min-height: 149px;
    padding: 12px 25px 24px;
  }

  .sd-mode-carousel__button {
    top: calc(50% - 18px);
    display: grid;
    width: 28px;
    height: 36px;
    border-color: rgba(96, 219, 255, .72);
    background: rgba(1, 16, 36, .82);
  }

  .sd-mode-carousel__button::before {
    width: 8px;
    height: 11px;
  }

  .sd-mode-carousel__button--prev { left: 8px; }
  .sd-mode-carousel__button--next { right: 8px; }
}