:root {
  --ink: #0c0a09;
  --ink-soft: #44403c;
  --surface: #fafaf9;
  --surface-2: #f0eeeb;
  --surface-3: #e4dfd8;
  --gold: #a16207;
  --gold-bright: #d7a646;
  --gold-soft: #f3dfb6;
  --border: #d6d3d1;
  --white: #ffffff;
  --shadow: 0 26px 70px rgba(28, 25, 23, 0.14);
  --shadow-strong: 0 46px 100px rgba(28, 25, 23, 0.22);
  --header-height: 72px;
  --hero-y: 0px;
  --hero-x: 0px;
  --hero-scale: 1;
  --hero-rotate: 0deg;
  --products-x: 0px;
  --products-y: 0px;
  --products-scale: 1;
  --scene-rotate: 0deg;
  --scene-products-a-x: -80px;
  --scene-products-a-y: 60px;
  --scene-products-b-x: 90px;
  --scene-products-b-y: -40px;
  --scene-products-scale: 0.62;
  --scene-products-b-scale: 0.5;
  --scene-glow: rgba(215, 166, 70, 0.2);
  --scene-veil: rgba(250, 250, 249, 0);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, rgba(250, 250, 249, 0.96), rgba(240, 238, 235, 0.96)),
    repeating-linear-gradient(135deg, rgba(12, 10, 9, 0.035) 0 1px, transparent 1px 38px);
  color: var(--ink);
  font-family: "Jost", Arial, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 77% 34%, var(--scene-glow), transparent 34%),
    radial-gradient(circle at 18% 80%, rgba(12, 10, 9, 0.06), transparent 24%);
  transition: background 420ms ease;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(250, 250, 249, 0.74) 0 34%, var(--scene-veil) 64%);
  opacity: 0;
  transition: opacity 260ms ease, background 260ms ease;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(161, 98, 7, 0.56);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 2000;
  transform: translateY(-140%);
  background: var(--ink);
  color: var(--white);
  padding: 12px 16px;
  border-radius: 999px;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-meter {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1001;
  height: 3px;
  width: var(--scroll-width, 0%);
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  transform-origin: left center;
}

.live-3d-shell {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

#supremier-3d {
  width: 100%;
  height: 100%;
  display: block;
}

.scene-badge {
  position: absolute;
  right: 34px;
  top: 104px;
  min-width: 132px;
  padding: 12px 14px;
  border: 1px solid rgba(161, 98, 7, 0.24);
  background: rgba(250, 250, 249, 0.62);
  color: var(--ink);
  box-shadow: 0 18px 45px rgba(12, 10, 9, 0.12);
  backdrop-filter: blur(18px);
  transform: translate3d(0, var(--badge-y, 0px), 0);
  transition: opacity 220ms ease;
}

.scene-badge-kicker,
.scene-badge-title {
  display: block;
}

.scene-badge-kicker {
  color: var(--gold);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.scene-badge-title {
  margin-top: 3px;
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 1.24rem;
  font-weight: 700;
  line-height: 1;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(110px, 1fr);
  align-items: center;
  gap: 24px;
  padding: 14px 32px;
  background: rgba(250, 250, 249, 0.82);
  border-bottom: 1px solid rgba(214, 211, 209, 0.62);
  backdrop-filter: blur(18px);
}

main {
  position: relative;
  z-index: 3;
}

.floating-action {
  z-index: 1000;
}

.brand-lockup {
  width: max-content;
  max-width: 100%;
  min-width: 0;
  min-height: 48px;
  display: grid;
  grid-template-columns: 46px auto;
  grid-template-rows: 28px 18px;
  column-gap: 9px;
  align-items: end;
}

.brand-crown {
  grid-row: 1 / 3;
  width: 46px;
  height: 36px;
  align-self: center;
  color: var(--gold);
}

.brand-crown path {
  fill: currentColor;
  filter: drop-shadow(0 6px 8px rgba(161, 98, 7, 0.2));
}

.brand-name {
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: 0;
  text-shadow: 0 4px 10px rgba(12, 10, 9, 0.14);
}

.brand-bar {
  width: max-content;
  min-width: 118px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  min-height: 20px;
  background: linear-gradient(180deg, #2a2724, #11100f);
  color: var(--gold-bright);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  box-shadow: 0 9px 18px rgba(12, 10, 9, 0.18);
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.desktop-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: rgba(12, 10, 9, 0.74);
  transition: color 180ms ease, transform 180ms ease;
}

.desktop-nav a:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.icon-button {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.icon-button:hover {
  background: rgba(161, 98, 7, 0.08);
  border-color: rgba(161, 98, 7, 0.24);
  transform: translateY(-1px);
}

.icon-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero {
  position: relative;
  min-height: 100dvh;
  padding: 136px 32px 80px;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
  align-items: center;
  gap: 24px;
  overflow: hidden;
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 72px 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(161, 98, 7, 0.36), transparent);
}

.hero-copy {
  position: relative;
  z-index: 4;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: "Bodoni Moda", Georgia, serif;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: 5.4rem;
  line-height: 0.92;
  max-width: 760px;
}

h2 {
  font-size: 3.8rem;
  line-height: 0.98;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.18;
  margin-bottom: 10px;
}

.hero-text,
.section-heading p,
.story-copy p,
.system-copy + .system-grid p,
.product-note p,
.system-item p,
.final-cta p {
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.hero-text {
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 20px;
  border: 1px solid transparent;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, #1c1917, #080706);
  color: var(--white);
  box-shadow: 0 18px 38px rgba(12, 10, 9, 0.22);
}

.button-primary:hover {
  box-shadow: 0 22px 42px rgba(12, 10, 9, 0.28);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(161, 98, 7, 0.28);
}

.hero-stage {
  position: relative;
  z-index: 1;
  min-height: 680px;
  isolation: isolate;
  pointer-events: none;
}

.three-ready .hero-stage,
.three-ready .story-scene,
.three-ready .cta-mascot {
  opacity: 0;
  visibility: hidden;
}

.hero-stage::before {
  content: "SUPREMIER";
  position: absolute;
  z-index: -1;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  color: rgba(12, 10, 9, 0.035);
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.foil-panel {
  position: absolute;
  border: 1px solid rgba(161, 98, 7, 0.24);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(243, 223, 182, 0.2)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.36), rgba(12, 10, 9, 0.04));
  box-shadow: var(--shadow);
  transform: rotate(var(--panel-rotate, -8deg));
}

.panel-a {
  width: 64%;
  height: 64%;
  right: 10%;
  top: 12%;
  --panel-rotate: -8deg;
}

.panel-b {
  width: 46%;
  height: 42%;
  left: 7%;
  bottom: 10%;
  --panel-rotate: 8deg;
}

.hero-mascot,
.hero-products,
.scene-mascot,
.scene-products,
.cta-mascot {
  user-select: none;
  pointer-events: none;
}

.hero-mascot {
  position: absolute;
  z-index: 3;
  left: 31%;
  top: 0;
  width: min(460px, 54%);
  height: auto;
  filter: drop-shadow(0 48px 52px rgba(12, 10, 9, 0.2));
  transform: translate3d(var(--hero-x), var(--hero-y), 0) scale(var(--hero-scale)) rotate(var(--hero-rotate));
  transition: filter 180ms ease;
  will-change: transform;
}

.hero-products {
  position: absolute;
  z-index: 4;
  left: 4%;
  bottom: 3%;
  width: min(570px, 70%);
  height: auto;
  filter: drop-shadow(0 38px 44px rgba(12, 10, 9, 0.16));
  transform: translate3d(var(--products-x), var(--products-y), 0) scale(var(--products-scale));
  will-change: transform;
}

.motion-label {
  position: absolute;
  z-index: 5;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 11px 16px;
  border: 1px solid rgba(161, 98, 7, 0.3);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  box-shadow: 0 16px 34px rgba(12, 10, 9, 0.12);
  backdrop-filter: blur(16px);
}

.motion-label-left {
  left: 10%;
  top: 18%;
}

.motion-label-right {
  right: 8%;
  bottom: 25%;
}

.scroll-cue {
  position: absolute;
  left: 32px;
  bottom: 28px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(12, 10, 9, 0.72);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-cue svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: arrow-drop 1400ms ease-in-out infinite;
}

.motion-story {
  position: relative;
  min-height: 320vh;
  scroll-margin-top: calc(var(--header-height) + 18px);
  background: linear-gradient(180deg, rgba(240, 238, 235, 0.7), rgba(250, 250, 249, 0.62));
  border-top: 1px solid rgba(214, 211, 209, 0.72);
  border-bottom: 1px solid rgba(214, 211, 209, 0.72);
}

.story-sticky {
  position: sticky;
  top: 0;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(420px, 1.16fr);
  align-items: center;
  gap: 44px;
  padding: 120px 32px 72px;
  overflow: hidden;
}

.story-copy {
  max-width: 580px;
  justify-self: end;
  position: relative;
  z-index: 4;
}

.chapter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.chapter-dot {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(161, 98, 7, 0.22);
  background: rgba(255, 255, 255, 0.56);
  color: rgba(12, 10, 9, 0.56);
  border-radius: 999px;
  padding: 10px 15px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 220ms ease, color 220ms ease, border-color 220ms ease;
}

.chapter-dot.is-active {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.story-scene {
  position: relative;
  min-height: 700px;
  isolation: isolate;
  pointer-events: none;
}

.orbit-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 520px;
  height: 520px;
  max-width: 78%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%) rotate(var(--scene-rotate));
  border: 1px solid rgba(161, 98, 7, 0.28);
  border-radius: 50%;
}

.orbit-ring::before,
.orbit-ring::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(12, 10, 9, 0.09);
  border-radius: inherit;
}

.orbit-ring::after {
  inset: 27%;
  border-color: rgba(161, 98, 7, 0.24);
}

.scene-mascot {
  position: absolute;
  z-index: 4;
  left: 50%;
  top: 50%;
  width: min(430px, 58%);
  height: auto;
  filter: drop-shadow(0 42px 52px rgba(12, 10, 9, 0.24));
  transform: translate(-50%, -50%) rotate(var(--scene-rotate));
}

.scene-products {
  position: absolute;
  z-index: 5;
  width: min(420px, 54%);
  height: auto;
  filter: drop-shadow(0 28px 34px rgba(12, 10, 9, 0.18));
}

.scene-products-a {
  left: 50%;
  top: 50%;
  transform: translate(calc(-50% + var(--scene-products-a-x)), calc(-50% + var(--scene-products-a-y))) scale(var(--scene-products-scale)) rotate(-10deg);
}

.scene-products-b {
  left: 50%;
  top: 50%;
  transform: translate(calc(-50% + var(--scene-products-b-x)), calc(-50% + var(--scene-products-b-y))) scale(var(--scene-products-b-scale)) rotate(12deg);
  opacity: 0.72;
}

.spark {
  position: absolute;
  z-index: 3;
  width: 10px;
  height: 10px;
  background: var(--gold-bright);
  transform: rotate(45deg);
  box-shadow: 0 0 0 8px rgba(215, 166, 70, 0.12);
}

.spark-a {
  left: 18%;
  top: 32%;
}

.spark-b {
  right: 17%;
  top: 21%;
}

.spark-c {
  right: 26%;
  bottom: 25%;
}

.story-steps {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  pointer-events: none;
}

.showcase,
.system,
.final-cta {
  position: relative;
  z-index: 2;
  padding: 108px 32px;
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.section-heading,
.system-copy {
  max-width: 820px;
  margin: 0 auto 48px;
  text-align: center;
}

.product-feature {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
  gap: 18px;
  align-items: stretch;
  position: relative;
  z-index: 4;
}

.product-card,
.product-note,
.system-item {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(161, 98, 7, 0.2);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.42)),
    linear-gradient(135deg, rgba(243, 223, 182, 0.28), rgba(255, 255, 255, 0));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  transition: border-color 260ms ease, box-shadow 260ms ease, transform 260ms ease;
}

.product-card-main {
  grid-row: span 2;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  overflow: hidden;
}

.product-card-main::before,
.product-card-main::after,
.system-item::after {
  content: "";
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transition: opacity 260ms ease, transform 260ms ease;
}

.product-card-main::before {
  left: 50%;
  top: -10px;
  width: 2px;
  height: 68px;
  background: linear-gradient(180deg, rgba(215, 166, 70, 0), rgba(215, 166, 70, 0.82), rgba(215, 166, 70, 0));
  transform: translateX(-50%) scaleY(0.6);
}

.product-card-main::after {
  inset: 20px;
  border: 1px solid rgba(215, 166, 70, 0.44);
  box-shadow: inset 0 0 44px rgba(215, 166, 70, 0.12);
  transform: scale(0.96);
}

.product-card-main img {
  width: min(820px, 100%);
  height: auto;
  filter: drop-shadow(0 34px 42px rgba(12, 10, 9, 0.18));
  transform: rotate(-2deg);
  transition: transform 360ms ease, filter 360ms ease;
}

.product-note {
  padding: 34px;
}

.note-number,
.system-kicker {
  color: var(--gold);
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 2.2rem;
  font-weight: 700;
}

.system-grid {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  position: relative;
  z-index: 4;
}

.system-item {
  min-height: 250px;
  padding: 30px;
}

.system-item::after {
  left: 30px;
  right: 30px;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(215, 166, 70, 0), rgba(215, 166, 70, 0.9), rgba(215, 166, 70, 0));
  transform: scaleX(0.42);
}

body[data-scene="vitrine"] .product-card-main {
  border-color: rgba(215, 166, 70, 0.48);
  box-shadow: 0 34px 90px rgba(161, 98, 7, 0.18);
}

body[data-scene="vitrine"] .product-card-main::before,
body[data-scene="vitrine"] .product-card-main::after {
  opacity: 1;
  transform: translateX(-50%) scaleY(1);
}

body[data-scene="vitrine"] .product-card-main::after {
  transform: scale(1);
}

body[data-scene="vitrine"] .product-card-main img {
  filter: drop-shadow(0 42px 54px rgba(12, 10, 9, 0.22));
  transform: rotate(-1deg) scale(1.025);
}

body[data-scene="sistema"] .system-item {
  border-color: rgba(215, 166, 70, 0.42);
  box-shadow: 0 30px 76px rgba(161, 98, 7, 0.14);
  transform: translateY(-6px);
}

body[data-scene="sistema"] .system-item:nth-child(2) {
  transform: translateY(-12px);
}

body[data-scene="sistema"] .system-item::after {
  opacity: 1;
  transform: scaleX(1);
}

.final-cta {
  position: relative;
  min-height: 560px;
  display: grid;
  grid-template-columns: 300px minmax(0, 680px) auto;
  align-items: center;
  gap: 34px;
  background: linear-gradient(135deg, rgba(20, 17, 15, 0.94), rgba(5, 5, 5, 0.92));
  color: var(--white);
  overflow: hidden;
}

.final-cta::before {
  content: "SUPREMIER";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: rgba(255, 255, 255, 0.035);
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.final-cta > * {
  position: relative;
  z-index: 1;
}

.final-cta p {
  color: rgba(255, 255, 255, 0.72);
}

.cta-mascot {
  width: min(290px, 100%);
  filter: drop-shadow(0 28px 45px rgba(215, 166, 70, 0.18));
}

.floating-action {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1000;
  width: 58px;
  height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--gold-bright), var(--gold));
  color: #171310;
  box-shadow: 0 18px 34px rgba(12, 10, 9, 0.22);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.floating-action:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 42px rgba(12, 10, 9, 0.28);
}

.floating-action svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.reveal-card {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes arrow-drop {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(5px);
  }
}

@media (max-width: 1160px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .desktop-nav {
    gap: 18px;
  }

  h1 {
    font-size: 4.4rem;
  }

  h2 {
    font-size: 3.1rem;
  }

  .hero,
  .story-sticky {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .story-copy {
    justify-self: start;
  }

  .hero-stage,
  .story-scene {
    min-height: 600px;
    width: 100%;
  }

  body::after {
    opacity: 0.34;
  }

  .product-feature,
  .final-cta {
    grid-template-columns: 1fr;
  }

  .final-cta {
    text-align: center;
    justify-items: center;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 68px;
    --scene-veil: rgba(250, 250, 249, 0.5);
  }

  .site-header {
    padding: 10px 16px;
    grid-template-columns: 1fr auto;
    gap: 10px;
  }

  .scene-badge {
    right: 16px;
    top: 86px;
    min-width: 112px;
    padding: 10px 12px;
  }

  .scene-badge-title {
    font-size: 1rem;
  }

  .desktop-nav {
    display: none;
  }

  .brand-name {
    font-size: 1.42rem;
  }

  .brand-bar {
    min-width: 102px;
    font-size: 0.64rem;
  }

  .hero,
  .story-sticky,
  .showcase,
  .system,
  .final-cta {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero {
    padding-top: 112px;
    padding-bottom: 32px;
    min-height: 100dvh;
    align-content: start;
    gap: 8px;
  }

  .hero-copy {
    max-width: 680px;
  }

  h1 {
    font-size: 3.25rem;
  }

  h2 {
    font-size: 2.35rem;
  }

  .hero-stage,
  .story-scene {
    min-height: clamp(300px, 48dvh, 500px);
  }

  .hero-stage::before,
  .final-cta::before {
    font-size: 3rem;
  }

  .hero-mascot {
    left: 40%;
    width: min(360px, 64%);
  }

  .hero-products {
    left: -9%;
    width: min(520px, 92%);
  }

  .motion-label-left {
    left: 2%;
    top: 14%;
  }

  .motion-label-right {
    right: 2%;
    bottom: 15%;
  }

  .product-feature,
  .system-grid {
    grid-template-columns: 1fr;
  }

  .product-card-main {
    grid-row: auto;
    min-height: 380px;
  }

  .motion-story {
    min-height: 260vh;
  }

  .story-sticky {
    min-height: 100dvh;
    align-content: start;
    padding-top: 104px;
    padding-bottom: 28px;
    gap: 6px;
  }

  .floating-action {
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 520px) {
  body::after {
    opacity: 0.72;
    background:
      linear-gradient(180deg, rgba(250, 250, 249, 0.92) 0 38%, rgba(250, 250, 249, 0.22) 58%, rgba(250, 250, 249, 0) 78%),
      linear-gradient(90deg, rgba(250, 250, 249, 0.78) 0 26%, rgba(250, 250, 249, 0) 86%);
  }

  .header-actions .icon-button:first-child {
    display: none;
  }

  .live-3d-shell {
    opacity: 0.94;
  }

  .scene-badge {
    display: none;
  }

  h1 {
    font-size: clamp(2.22rem, 11vw, 2.72rem);
    max-width: 10ch;
  }

  h2 {
    font-size: clamp(1.88rem, 8.8vw, 2.18rem);
  }

  .hero-text,
  .section-heading p,
  .story-copy p,
  .product-note p,
  .system-item p,
  .final-cta p {
    font-size: 1rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero {
    padding: 100px 16px 20px;
    min-height: 100svh;
  }

  .hero-text {
    margin-bottom: 20px;
    max-width: 31ch;
  }

  .button {
    min-height: 50px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-stage,
  .story-scene {
    min-height: clamp(250px, 40svh, 360px);
  }

  .scroll-cue {
    display: none;
  }

  .motion-label {
    display: none;
  }

  .scene-mascot {
    width: min(330px, 74%);
  }

  .scene-products {
    width: min(340px, 78%);
  }

  .product-note,
  .system-item {
    padding: 24px;
  }

  .showcase,
  .system,
  .final-cta {
    padding-top: 74px;
    padding-bottom: 74px;
  }

  .section-heading,
  .system-copy {
    text-align: left;
    margin-bottom: 28px;
  }

  .product-card-main {
    min-height: 285px;
    padding: 20px;
  }

  .system-item {
    min-height: auto;
  }

  .final-cta {
    min-height: 480px;
    text-align: left;
    justify-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-mascot,
  .hero-products,
  .scene-mascot,
  .scene-products-a,
  .scene-products-b {
    transform: none !important;
  }

  .live-3d-shell {
    display: none;
  }

  .three-ready .hero-stage,
  .three-ready .story-scene,
  .three-ready .cta-mascot {
    opacity: 1;
    visibility: visible;
  }
}