:root {
  --ink: #111111;
  --muted: #5f5f5f;
  --panel: #ffffff;
  --line: #111111;
  --line-soft: #cdcdcd;
  --scene-transition-speed: 1.5;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  min-height: 100dvh;
  margin: 0;
  background: #ffffff;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  overflow: hidden;
}

.stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  isolation: isolate;
  --mobile-scene-shift: 0px;
  --mobile-menu-raise: -34px;
}

.fx {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 20;
  pointer-events: none;
  transform: translateY(var(--mobile-scene-shift));
  transition: opacity 0.28s ease, transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.scene-container {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transform: translateY(var(--mobile-scene-shift));
  transition: transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.main-logo {
  width: 70vw;
  max-width: 600px;
  height: auto;
  opacity: 0;
  pointer-events: none;
}

.scene-brain {
  width: min(42vw, 490px);
  max-width: 490px;
  height: auto;
  opacity: 0;
  pointer-events: none;
}

.scene-void {
  width: 2px;
  height: 2px;
  opacity: 0;
  pointer-events: none;
}

.scene-nav {
  display: none;
}

.nav-btn {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: linear-gradient(90deg, #111111 0 0) 0 0 / 0% 100% no-repeat, #ffffff;
  border: 1.5px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  padding: 16px 30px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.25;
  transition:
    background-size 0.28s cubic-bezier(0.2, 0.8, 0.2, 1),
    color 0.2s ease,
    transform 0.2s ease;
}

.nav-btn:hover,
.nav-btn.active {
  background-size: 100% 100%, 100% 100%;
  color: #ffffff;
  transform: translateY(-1px);
}

.nav-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.menu-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: stretch;
}

.menu-tabs .menu-tab {
  flex: 1 1 180px;
}

.menu-tabs .menu-tab[data-menu="transitions"] {
  flex: 3 1 420px;
  text-transform: none;
  letter-spacing: 0.04em;
}

.menu-sections {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.menu-section {
  display: none;
  padding: 0;
  border: none;
  background: transparent;
}

.menu-section.active {
  display: block;
}

.menu-section-note {
  margin-bottom: 10px;
  font-size: 12px;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.transition-btn {
  text-transform: none;
  letter-spacing: 0.03em;
}

.scene-btn {
  text-transform: none;
  letter-spacing: 0.05em;
}

.action-btn {
  display: none;
}

.mega-burger {
  position: absolute;
  left: 50%;
  top: 9%;
  z-index: 180;
  width: 146px;
  height: 98px;
  padding: 12px 0;
  border: none;
  background: transparent;
  transform: translate(
    calc(-50% + var(--burger-recoil-x, 0px)),
    calc(-50% + var(--burger-recoil-y, 0px) + var(--mobile-scene-shift))
  ) rotate(var(--burger-recoil-rot, 0deg));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
  cursor: pointer;
  transition: opacity 0.26s ease;
  will-change: transform;
}

.mega-burger-line {
  height: 4px;
  width: 100%;
  background: #111111;
  transition: transform 0.25s ease;
  animation: burgerLineSpring 5.2s cubic-bezier(0.22, 0.78, 0.2, 1) infinite;
}

.mega-burger-line:nth-child(2) {
  animation-delay: 0.08s;
}

.mega-burger-line:nth-child(3) {
  animation-delay: 0.16s;
}

@keyframes burgerLineSpring {
  0%, 78%, 100% {
    width: 100%;
    margin-left: 0;
  }
  82% {
    width: 91%;
    margin-left: 4.5%;
  }
  86% {
    width: 104%;
    margin-left: -2%;
  }
  90% {
    width: 98%;
    margin-left: 1%;
  }
  94% {
    width: 100%;
    margin-left: 0;
  }
}

.mega-burger:hover .mega-burger-line:nth-child(1) { transform: translateX(-6px); }
.mega-burger:hover .mega-burger-line:nth-child(2) { transform: translateX(4px); }
.mega-burger:hover .mega-burger-line:nth-child(3) { transform: translateX(-2px); }

.scene-element {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  pointer-events: none;
}

.scene-element.active {
  opacity: 0.04;
}

.text-scene {
  font-weight: 700;
  font-size: clamp(40px, 8vw, 120px);
  text-transform: uppercase;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.scene-copy {
  position: absolute;
  left: 50%;
  top: 56%;
  z-index: 90;
  width: fit-content;
  max-width: calc(100vw - 96px);
  transform: translate(-50%, calc(18px + var(--mobile-scene-shift)));
  opacity: 0;
  pointer-events: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: clamp(10px, 1.5vh, 16px);
  transition:
    opacity calc(0.8s / var(--scene-transition-speed)) ease,
    transform calc(0.9s / var(--scene-transition-speed)) cubic-bezier(0.2, 0.8, 0.2, 1);
}

.scene-copy.visible {
  opacity: 1;
  transform: translate(-50%, var(--mobile-scene-shift));
}

.scene-copy:not(.has-copy) {
  display: none;
}

.scene-copy-kicker {
  margin: 0;
  font-size: clamp(14px, 1.35vw, 22px);
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
  color: #111111;
  max-width: 100%;
  text-align: left;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(24px);
  filter: blur(6px);
  transition:
    opacity calc(1.35s / var(--scene-transition-speed)) cubic-bezier(0.18, 0.82, 0.22, 1),
    transform calc(1.5s / var(--scene-transition-speed)) cubic-bezier(0.18, 0.82, 0.22, 1),
    filter calc(1.35s / var(--scene-transition-speed)) ease;
  will-change: opacity, transform, filter;
}

.scene-copy-line {
  margin: 0;
  font-size: clamp(9px, 0.9vw, 14px);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.22;
  white-space: nowrap;
  text-transform: uppercase;
  color: #4a4a4a;
  max-width: 100%;
  text-align: left;
  opacity: 0;
  transform: translateY(26px);
  filter: blur(6px);
  transition:
    opacity calc(1.45s / var(--scene-transition-speed)) cubic-bezier(0.18, 0.82, 0.22, 1),
    transform calc(1.65s / var(--scene-transition-speed)) cubic-bezier(0.18, 0.82, 0.22, 1),
    filter calc(1.45s / var(--scene-transition-speed)) ease;
  will-change: opacity, transform, filter;
}

.scene-copy[data-copy-scene="scene-2"] {
  top: 62%;
  width: min(780px, calc(100vw - 132px));
  max-width: min(780px, calc(100vw - 132px));
  transform: translate(-50%, calc(10px + var(--mobile-scene-shift)));
  align-items: center;
  text-align: center;
  gap: clamp(10px, 1.6vh, 18px);
}

.scene-copy[data-copy-scene="scene-2"].visible {
  transform: translate(-50%, var(--mobile-scene-shift));
}

.scene-copy[data-copy-scene="scene-2"] .scene-copy-kicker {
  font-size: clamp(11px, 0.95vw, 14px);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.45;
  color: #4b4b4b;
  white-space: normal;
  text-align: center;
}

.scene-copy[data-copy-scene="scene-2"] .scene-copy-line {
  font-size: clamp(20px, 1.85vw, 30px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.12;
  color: #111111;
  white-space: normal;
  text-align: center;
}

.scene-copy-kicker.is-visible,
.scene-copy-line.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.scene-ai-prompt {
  position: absolute;
  left: 50%;
  bottom: 162px;
  z-index: 160;
  width: min(760px, calc(100vw - 120px));
  transform: translate(-50%, 26px);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity calc(0.72s / var(--scene-transition-speed)) cubic-bezier(0.2, 0.78, 0.2, 1),
    transform calc(0.88s / var(--scene-transition-speed)) cubic-bezier(0.2, 0.78, 0.2, 1);
}

.scene-ai-prompt.visible {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.scene-ai-field {
  height: 72px;
  width: 100%;
  border: 1.5px solid rgba(17, 17, 17, 0.68);
  background: rgba(255, 255, 255, 0.84);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 16px 0 22px;
}

.scene-ai-input {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  border: none;
  background: transparent;
  outline: none;
  font-size: clamp(14px, 1.05vw, 17px);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: rgba(17, 17, 17, 0.82);
}

.scene-ai-input::placeholder {
  color: rgba(17, 17, 17, 0.44);
}

.scene-ai-field:focus-within {
  border-color: rgba(17, 17, 17, 0.94);
  background: rgba(255, 255, 255, 0.96);
}

.scene-ai-send {
  width: 42px;
  height: 42px;
  border: 1.5px solid rgba(17, 17, 17, 0.78);
  position: relative;
  flex: 0 0 auto;
  background: transparent;
  cursor: pointer;
}

.scene-ai-send::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 20px;
  width: 14px;
  height: 1.5px;
  background: #111111;
}

.scene-ai-send::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 15px;
  width: 8px;
  height: 8px;
  border-top: 1.5px solid #111111;
  border-right: 1.5px solid #111111;
  transform: rotate(45deg);
}

.scene-contact-panel {
  position: absolute;
  left: 50%;
  bottom: 182px;
  z-index: 162;
  width: min(760px, calc(100vw - 120px));
  transform: translate(-50%, 26px);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity calc(0.72s / var(--scene-transition-speed)) cubic-bezier(0.2, 0.78, 0.2, 1),
    transform calc(0.88s / var(--scene-transition-speed)) cubic-bezier(0.2, 0.78, 0.2, 1);
}

.scene-contact-panel.visible {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.scene-contact-card {
  border: 1.5px solid rgba(17, 17, 17, 0.72);
  background: rgba(255, 255, 255, 0.9);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.scene-contact-brand {
  margin: 0;
  font-size: clamp(13px, 1.1vw, 17px);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #111111;
}

.scene-contact-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scene-contact-row {
  margin: 0;
  font-size: clamp(12px, 1.02vw, 16px);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(17, 17, 17, 0.86);
}

.scene-contact-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.scene-contact-input {
  min-width: 0;
  height: 52px;
  border: 1.5px solid rgba(17, 17, 17, 0.72);
  background: rgba(255, 255, 255, 0.98);
  padding: 0 14px;
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #111111;
  outline: none;
}

.scene-contact-input::placeholder {
  color: rgba(17, 17, 17, 0.42);
}

.scene-contact-input:focus {
  border-color: rgba(17, 17, 17, 0.95);
}

.scene-contact-send {
  height: 52px;
  border: 1.5px solid rgba(17, 17, 17, 0.8);
  background: #ffffff;
  color: #111111;
  padding: 0 18px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease;
}

.scene-contact-send:hover {
  background: #111111;
  color: #ffffff;
}

.scene-contact-send:disabled {
  opacity: 0.62;
  cursor: default;
}

.frame-nav {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 56px;
  z-index: 190;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  padding: 0 24px;
  transform: translateY(var(--mobile-scene-shift));
  transition: opacity 0.3s ease, transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.frame-arrow {
  position: relative;
  overflow: visible;
  min-height: 84px;
  width: min(23vw, 322px);
  border: none;
  border-radius: 0;
  background: transparent;
  color: transparent;
  font-family: inherit;
  font-size: 0;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.32s cubic-bezier(0.22, 0.78, 0.2, 1), opacity 0.2s ease;
}

.frame-arrow::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: #111111;
  transform: translateY(-50%) scaleX(0.92);
  transform-origin: center;
  transition: transform 0.34s cubic-bezier(0.22, 0.78, 0.2, 1), opacity 0.25s ease;
}

.frame-arrow::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 18px;
  height: 18px;
  border-top: 2px solid #111111;
  transition: transform 0.34s cubic-bezier(0.22, 0.78, 0.2, 1);
}

#frame-next::after {
  right: 0;
  border-right: 2px solid #111111;
  transform: translate(-2px, -50%) rotate(45deg);
}

#frame-next::before {
  transform-origin: left center;
}

#frame-prev::after {
  left: 0;
  border-left: 2px solid #111111;
  transform: translate(2px, -50%) rotate(-45deg);
}

#frame-prev::before {
  transform-origin: right center;
}

.frame-arrow:hover {
  transform: translateY(-1px);
}

#frame-next:hover::before {
  transform: translateY(-50%) scaleX(1);
}

#frame-next:hover::after {
  transform: translate(1px, -50%) rotate(45deg);
}

#frame-prev:hover::before {
  transform: translateY(-50%) scaleX(1);
}

#frame-prev:hover::after {
  transform: translate(-1px, -50%) rotate(-45deg);
}

.frame-arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

.frame-arrow.is-ghost {
  opacity: 0.24;
  pointer-events: none;
}

.burger-shot-layer {
  position: absolute;
  inset: 0;
  z-index: 186;
  pointer-events: none;
  overflow: hidden;
  transform: translateY(var(--mobile-scene-shift));
  transition: transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.burger-menu-burst {
  position: absolute;
  inset: 0;
  z-index: 230;
  pointer-events: none;
  overflow: hidden;
}

.burger-menu-burst::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.54);
  opacity: 0;
  transition: opacity 0.32s ease;
  pointer-events: none;
}

.burger-menu-burst.open {
  pointer-events: auto;
}

.burger-menu-burst.open::before {
  opacity: 1;
}

.burger-menu-shot-item {
  position: absolute;
  left: var(--menu-from-x);
  top: var(--menu-from-y);
  z-index: 1;
  border: none;
  background: transparent;
  color: #111111;
  font-family: inherit;
  font-size: clamp(20px, 2.2vw, 34px);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  padding: 0;
  white-space: nowrap;
  cursor: pointer;
  opacity: 0;
  transform: translate(-50%, -50%) translate(0, 0) scale(0.94);
  transition:
    transform 0.58s cubic-bezier(0.2, 0.8, 0.2, 1) var(--menu-delay, 0ms),
    opacity 0.34s ease var(--menu-delay, 0ms),
    color 0.22s ease;
  will-change: transform, opacity;
}

.burger-menu-shot-measure {
  position: absolute;
  left: -10000px;
  top: -10000px;
  transform: none;
  opacity: 0;
  visibility: hidden;
  transition: none;
  pointer-events: none;
}

.burger-menu-burst.open .burger-menu-shot-item {
  opacity: 0.9;
  transform: translate(-50%, -50%) translate(
    calc(var(--menu-to-x) - var(--menu-from-x)),
    calc(var(--menu-to-y) - var(--menu-from-y))
  ) scale(1);
}

.burger-menu-shot-item:hover,
.burger-menu-shot-item.active {
  color: #000000;
  opacity: 1;
}

.stage.desktop-menu-open .mega-burger {
  opacity: 0.45;
}

.stage.desktop-menu-open .mega-burger-line {
  animation-play-state: paused;
  transform: scaleX(0.78);
  opacity: 0.32;
}

.burger-shot-chip {
  position: absolute;
  width: var(--shot-w);
  height: var(--shot-h);
  transform: translate3d(-50%, -50%, 0) rotate(var(--shot-spin-from));
  opacity: 0;
  animation: burgerShotFly var(--shot-dur) cubic-bezier(0.2, 0.78, 0.2, 1) var(--shot-delay) forwards;
  will-change: transform, opacity;
}

@keyframes burgerShotFly {
  0% {
    opacity: 0.95;
    transform: translate3d(-50%, -50%, 0) rotate(var(--shot-spin-from));
  }
  72% {
    opacity: 0.85;
  }
  100% {
    opacity: 0;
    transform: translate3d(
      calc(-50% + var(--shot-dx)),
      calc(-50% + var(--shot-dy)),
      0
    ) rotate(var(--shot-spin-to));
  }
}

.pixel-fall-layer {
  position: absolute;
  inset: 0;
  z-index: 210;
  overflow: hidden;
  pointer-events: none;
  transform: translateY(var(--mobile-scene-shift));
  transition: transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.ui-pixel-stage {
  position: absolute;
  inset: 0;
  z-index: 205;
  pointer-events: none;
  overflow: hidden;
  transform: translateY(var(--mobile-scene-shift));
  transition: transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
}

.ui-pixel-chip {
  position: absolute;
  width: var(--ui-size);
  height: var(--ui-size);
  transform: translate3d(var(--ui-from-x), var(--ui-from-y), 0);
  opacity: 0;
  animation: uiPixelBuild var(--ui-duration) cubic-bezier(0.16, 0.82, 0.2, 1) var(--ui-delay) forwards;
  will-change: transform, opacity;
}

.ui-pixel-chip-out {
  animation: uiPixelExplodeDrop var(--ui-duration) cubic-bezier(0.16, 0.8, 0.2, 1) var(--ui-delay) forwards;
}

@keyframes uiPixelBuild {
  0% {
    opacity: 0;
    transform: translate3d(var(--ui-from-x), var(--ui-from-y), 0);
  }
  16% {
    opacity: 0.95;
  }
  80% {
    opacity: 0.85;
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--ui-to-x), var(--ui-to-y), 0);
  }
}

@keyframes uiPixelExplodeDrop {
  0% {
    opacity: 0.96;
    transform: translate3d(var(--ui-from-x), var(--ui-from-y), 0);
  }
  22% {
    opacity: 0.9;
    transform: translate3d(
      calc(var(--ui-from-x) + ((var(--ui-to-x) - var(--ui-from-x)) * 0.22)),
      calc(var(--ui-from-y) + ((var(--ui-to-y) - var(--ui-from-y)) * 0.22) - 26px),
      0
    );
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--ui-to-x), var(--ui-to-y), 0);
  }
}

.pixel-intro-hidden {
  opacity: 0 !important;
}

.pixel-proxy-source {
  opacity: 0 !important;
}

.pixel-chip {
  position: absolute;
  width: var(--chip-size);
  height: var(--chip-size);
  animation: pixelChipDrop var(--chip-dur) cubic-bezier(0.15, 0.8, 0.2, 1) var(--chip-delay) forwards;
  will-change: transform, opacity;
}

@keyframes pixelChipDrop {
  0% {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--chip-dx), calc(100vh + var(--chip-dy)), 0);
  }
}

.presentation-overlay {
  position: absolute;
  inset: 0;
  z-index: 220;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: calc(env(safe-area-inset-top, 0px) + 74px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(var(--mobile-menu-raise));
  transition: opacity 0.34s ease, transform 0.58s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.presentation-menu {
  width: min(1160px, calc(100vw - 84px));
  min-height: 0;
  max-height: none;
  height: auto;
  border: none;
  background: transparent;
  display: flex;
  align-items: stretch;
  justify-content: center;
  opacity: 1;
  transform: none;
}

.presentation-menu-list {
  width: min(1080px, 100%);
  max-height: none;
  overflow: hidden;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  gap: clamp(20px, 2vw, 36px);
  padding: 10px 12px;
}

.presentation-item {
  border: none;
  background: transparent;
  color: #101010;
  font-family: inherit;
  font-size: clamp(26px, 3.2vw, 52px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  padding: 0;
  cursor: pointer;
  opacity: 0.58;
  transform: translateY(0);
  transition: opacity 0.22s ease, transform 0.3s ease, color 0.22s ease;
}

.presentation-item:hover,
.presentation-item.active {
  opacity: 1;
  transform: translateY(-1px);
  color: #000000;
}

.presentation-item:not(.active) {
  opacity: 0.58;
}

@media (min-width: 901px) {
  .presentation-overlay {
    display: none;
  }
}

.controls-panel, .physics-panel {
  position: absolute;
  right: 30px;
  bottom: 30px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 320px;
  max-height: min(86vh, 780px);
  overflow: auto;
  padding: 20px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: 0;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.panel-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1.5px solid var(--line);
  background: #ffffff;
  padding: 14px;
}

.panel-title {
  margin: 0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}

.control-group {
  display: flex;
  flex-direction: column;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.control-group label {
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}

.control-group span {
  color: var(--ink);
}

.panel-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.panel-btn {
  padding: 14px 16px;
  font-size: 11px;
}

input[type=range] {
  width: 100%;
  margin: 0;
  background: transparent;
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #dfdfdf;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 12px;
  margin-top: -4px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #111111;
  cursor: pointer;
}

input[type=range]::-moz-range-track {
  width: 100%;
  height: 6px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #dfdfdf;
}

input[type=range]::-moz-range-thumb {
  width: 16px;
  height: 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #111111;
  cursor: pointer;
}

@media (max-width: 900px) {
  .nav-btn {
    padding: 12px 14px;
    font-size: 11px;
    letter-spacing: 0.06em;
  }

  .scene-copy {
    top: 54%;
    max-width: calc(100vw - 36px);
    gap: 10px;
  }

  .scene-copy-kicker {
    font-size: clamp(12px, 2.8vw, 16px);
    letter-spacing: 0.1em;
  }

  .scene-copy-line {
    font-size: clamp(8px, 1.9vw, 11px);
    letter-spacing: 0.04em;
    line-height: 1.2;
  }

  .scene-brain {
    width: min(68vw, 340px);
    max-width: 340px;
  }

  .scene-copy[data-copy-scene="scene-2"] {
    top: 60%;
    width: calc(100vw - 34px);
    max-width: calc(100vw - 34px);
    gap: 10px;
  }

  .scene-copy[data-copy-scene="scene-2"] .scene-copy-kicker {
    font-size: clamp(10px, 2.55vw, 12px);
    letter-spacing: 0.08em;
    line-height: 1.4;
  }

  .scene-copy[data-copy-scene="scene-2"] .scene-copy-line {
    font-size: clamp(15px, 4.6vw, 22px);
    letter-spacing: 0.06em;
    line-height: 1.15;
  }

  .scene-ai-prompt {
    width: calc(100vw - 28px);
    bottom: calc(88px + env(safe-area-inset-bottom, 0px));
    transform: translate(-50%, 18px);
  }

  .scene-ai-field {
    height: 58px;
    padding: 0 10px 0 14px;
    gap: 10px;
  }

  .scene-ai-input {
    font-size: clamp(10px, 3vw, 13px);
    letter-spacing: 0.05em;
  }

  .scene-ai-send {
    width: 34px;
    height: 34px;
  }

  .scene-ai-send::before {
    left: 8px;
    top: 16px;
    width: 12px;
  }

  .scene-ai-send::after {
    left: 16px;
    top: 12px;
    width: 7px;
    height: 7px;
  }

  .scene-contact-panel {
    width: calc(100vw - 28px);
    bottom: calc(98px + env(safe-area-inset-bottom, 0px));
    transform: translate(-50%, 16px);
  }

  .scene-contact-card {
    padding: 12px;
    gap: 10px;
  }

  .scene-contact-brand {
    font-size: clamp(11px, 3.2vw, 13px);
    letter-spacing: 0.12em;
  }

  .scene-contact-row {
    font-size: clamp(11px, 2.9vw, 13px);
    letter-spacing: 0.03em;
  }

  .scene-contact-form {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .scene-contact-input,
  .scene-contact-send {
    height: 46px;
    font-size: 12px;
  }

  .frame-nav {
    bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    padding: 0 14px;
    gap: 12px;
  }

  .frame-arrow {
    min-height: 64px;
    width: min(42vw, 230px);
  }

  .frame-arrow::before {
    height: 3px;
    transform: translateY(-50%) scaleX(0.96);
  }

  .frame-arrow::after {
    width: 16px;
    height: 16px;
  }

  #frame-next::after {
    border-top-width: 2.5px;
    border-right-width: 2.5px;
  }

  #frame-prev::after {
    border-top-width: 2.5px;
    border-left-width: 2.5px;
  }

  .mega-burger {
    width: 88px;
    height: 58px;
    padding: 8px 0;
    top: 10%;
  }

  .mega-burger-line {
    height: 3px;
  }

  .presentation-overlay {
    align-items: flex-start;
    justify-content: center;
    padding-top: calc(env(safe-area-inset-top, 0px) + 82px);
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
  }

  .presentation-menu {
    width: calc(100vw - 24px);
    height: auto;
    max-height: none;
  }

  .presentation-menu-list {
    width: 100%;
    overflow: visible;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: clamp(10px, 1.6vh, 16px);
    padding: 0 4px;
    align-items: center;
  }

  .presentation-item {
    font-size: clamp(24px, 8vw, 40px);
    letter-spacing: 0.09em;
    line-height: 1.04;
    opacity: 0;
    transform: translateY(-18px);
  }

  .burger-menu-burst {
    display: none;
  }

  .stage.mobile-menu-open {
    --mobile-scene-shift: 100dvh;
    --mobile-menu-raise: 0px;
  }

  .stage.mobile-menu-open .mega-burger,
  .stage.mobile-menu-ready .mega-burger {
    transition:
      opacity 0.26s ease,
      transform 0.62s cubic-bezier(0.2, 0.78, 0.2, 1);
  }

  .stage.mobile-menu-ready .presentation-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .stage.mobile-menu-ready .presentation-item {
    opacity: 0.92;
    transform: translateY(0);
  }

  .stage.mobile-menu-ready .presentation-item:nth-child(1) { transition-delay: 40ms; }
  .stage.mobile-menu-ready .presentation-item:nth-child(2) { transition-delay: 90ms; }
  .stage.mobile-menu-ready .presentation-item:nth-child(3) { transition-delay: 140ms; }
  .stage.mobile-menu-ready .presentation-item:nth-child(4) { transition-delay: 190ms; }

  .controls-panel {
    right: 10px;
    bottom: 10px;
    min-width: 260px;
    max-width: calc(100vw - 20px);
    padding: 12px;
  }

  .action-btn { display: none; }
}