.scroll-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent-warm));
  box-shadow: 0 0 14px rgba(95, 195, 255, 0.35);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.side-caption {
  position: fixed;
  top: 50%;
  right: 18px;
  z-index: 16;
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255, 255, 255, 0.28);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  pointer-events: none;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
}

.side-caption i {
  position: relative;
  display: block;
  width: 1px;
  height: 54px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.12);
}

.side-caption i::after {
  position: absolute;
  inset: -100% 0 auto;
  height: 100%;
  background: var(--accent);
  content: "";
  animation: side-line 2.8s ease-in-out infinite;
}

.interlude {
  position: relative;
  overflow: hidden;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(90deg, rgba(95, 195, 255, 0.035), transparent 30%, rgba(255, 210, 138, 0.025) 70%, transparent),
    #080a0f;
}

.interlude::before,
.interlude::after {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  width: 12vw;
  content: "";
  pointer-events: none;
}

.interlude::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg), transparent);
}

.interlude::after {
  right: 0;
  background: linear-gradient(270deg, var(--bg), transparent);
}

.interlude-track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 34px;
  white-space: nowrap;
  animation: interlude-marquee 24s linear infinite;
  will-change: transform;
}

.interlude-track span {
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.4rem, 3vw, 2.8rem);
  font-weight: 880;
  letter-spacing: 0.16em;
}

.interlude-track span:nth-of-type(4n + 1) {
  color: var(--accent);
  text-shadow: 0 0 24px rgba(95, 195, 255, 0.18);
}

.interlude-track i {
  color: rgba(255, 255, 255, 0.2);
  font-size: 0.9rem;
  font-style: normal;
}

.world-stage {
  position: relative;
  isolation: isolate;
  translate: var(--parallax-x, 0) var(--parallax-y, 0);
  transition: translate 0.32s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: translate;
}

.world-stage::before {
  position: absolute;
  z-index: -4;
  right: -16%;
  bottom: -18%;
  left: -22%;
  height: 48%;
  border-radius: 50% 50% 0 0 / 26% 26% 0 0;
  background:
    radial-gradient(circle at 12% 84%, rgba(139, 211, 255, 0.8) 0 1px, transparent 2px),
    radial-gradient(circle at 25% 72%, rgba(255, 210, 138, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 38% 80%, rgba(139, 211, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 48% 67%, rgba(255, 255, 255, 0.55) 0 1px, transparent 2px),
    radial-gradient(circle at 58% 79%, rgba(139, 211, 255, 0.7) 0 1px, transparent 2px),
    radial-gradient(circle at 72% 70%, rgba(255, 210, 138, 0.58) 0 1px, transparent 2px),
    radial-gradient(circle at 86% 81%, rgba(139, 211, 255, 0.72) 0 1px, transparent 2px),
    linear-gradient(to top, rgba(7, 11, 18, 0.92), rgba(7, 11, 18, 0.22) 65%, transparent);
  background-size: 74px 32px, 86px 36px, 92px 40px, 68px 34px, 80px 36px, 94px 42px, 72px 32px, auto;
  box-shadow: 0 -22px 60px rgba(95, 195, 255, 0.06);
  content: "";
  opacity: 0.78;
  filter: blur(0.25px);
  transform: perspective(500px) rotateX(64deg) translateY(18%);
  transform-origin: bottom;
  animation: city-shimmer 9s ease-in-out infinite alternate;
}

.world-stage::after {
  position: absolute;
  z-index: -3;
  inset: 47% -26% auto -30%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 211, 255, 0.08), rgba(139, 211, 255, 0.7), rgba(255, 210, 138, 0.55), transparent);
  box-shadow:
    0 0 18px rgba(95, 195, 255, 0.22),
    0 0 52px rgba(95, 195, 255, 0.1);
  content: "";
  opacity: 0.72;
  animation: horizon-breathe 5.8s ease-in-out infinite;
}

.world-card {
  position: relative;
  isolation: isolate;
}

.world-card::before {
  box-shadow:
    inset 0 0 18px rgba(95, 195, 255, 0.05),
    0 0 42px rgba(95, 195, 255, 0.035);
}

.world-card::after {
  box-shadow: 0 0 30px rgba(95, 195, 255, 0.08);
}

.world-card > .world-core::before {
  position: absolute;
  inset: -26px;
  border: 1px solid rgba(139, 211, 255, 0.08);
  border-radius: 50%;
  content: "";
  animation: core-ping 3.6s ease-out infinite;
}

.world-card > .world-core::after {
  position: absolute;
  inset: -58px;
  border: 1px dashed rgba(255, 255, 255, 0.07);
  border-radius: 50%;
  content: "";
  animation: core-spin 22s linear infinite;
}

.hero::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    repeating-linear-gradient(to bottom, rgba(255, 255, 255, 0.012) 0 1px, transparent 1px 4px),
    linear-gradient(105deg, transparent 0 38%, rgba(95, 195, 255, 0.018) 48%, transparent 58%);
  content: "";
  pointer-events: none;
  opacity: 0.45;
  mix-blend-mode: screen;
}

.hero-rays {
  overflow: hidden;
}

.hero-rays::before {
  position: absolute;
  top: -28%;
  right: 2%;
  width: 46%;
  height: 156%;
  background: linear-gradient(90deg, transparent, rgba(139, 211, 255, 0.045), transparent);
  content: "";
  filter: blur(14px);
  transform: rotate(18deg) translateX(var(--hero-ray-shift, 0));
  animation: hero-light-sweep 11s ease-in-out infinite alternate;
}

.hero-copy {
  position: relative;
}

.hero-copy::before {
  position: absolute;
  top: -42px;
  left: -34px;
  width: 110px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  content: "";
  opacity: 0.5;
}

.hero-copy::after {
  position: absolute;
  top: -48px;
  left: -34px;
  color: rgba(255, 255, 255, 0.2);
  content: "MV / 00";
  font-size: 0.54rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  transform: translateY(-100%);
}

.feature-card,
.status-panel {
  transform-style: preserve-3d;
}

.feature-card:hover,
.status-panel:hover {
  box-shadow:
    0 28px 70px rgba(0, 0, 0, 0.3),
    0 0 38px rgba(95, 195, 255, 0.055);
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  content: "";
  opacity: 0;
  transform: scaleX(0.25);
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.site-nav a.is-active {
  color: var(--text);
}

.site-nav a.is-active::after {
  opacity: 0.82;
  transform: scaleX(1);
}

.opening-pending .hero-eyebrow,
.opening-pending .hero-line,
.opening-pending .hero-lead,
.opening-pending .hero-actions,
.opening-pending .world-stage {
  animation-play-state: paused;
}

@keyframes interlude-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 17px)); }
}

@keyframes side-line {
  0% { transform: translateY(0); }
  100% { transform: translateY(200%); }
}

@keyframes city-shimmer {
  0% { opacity: 0.54; filter: brightness(0.86); }
  50% { opacity: 0.82; }
  100% { opacity: 0.66; filter: brightness(1.12); }
}

@keyframes horizon-breathe {
  0%, 100% { opacity: 0.34; transform: scaleX(0.9); }
  50% { opacity: 0.9; transform: scaleX(1.04); }
}

@keyframes core-ping {
  0% { opacity: 0.55; transform: scale(0.72); }
  75%, 100% { opacity: 0; transform: scale(1.48); }
}

@keyframes core-spin {
  to { transform: rotate(360deg); }
}

@keyframes hero-light-sweep {
  from { transform: rotate(18deg) translateX(-8%); opacity: 0.32; }
  to { transform: rotate(18deg) translateX(18%); opacity: 0.76; }
}

@media (max-width: 1100px) {
  .side-caption { display: none; }
}

@media (max-width: 900px) {
  .world-stage::before {
    right: -8%;
    left: -8%;
    bottom: -12%;
  }
}

@media (max-width: 680px) {
  .interlude { padding: 18px 0; }
  .interlude-track { gap: 22px; }
  .interlude-track span { letter-spacing: 0.12em; }
  .hero-copy::before,
  .hero-copy::after { display: none; }
  .world-stage::after { inset-inline: -10%; }
}

@media (prefers-reduced-motion: reduce) {
  .interlude-track,
  .side-caption i::after,
  .world-stage::before,
  .world-stage::after,
  .world-card > .world-core::before,
  .world-card > .world-core::after,
  .hero-rays::before {
    animation: none !important;
  }

  .world-stage {
    translate: 0 0;
  }
}