:root {
  --bg: #060811;
  --bg-top: #10152e;
  --text: #f4f4f6;
  --muted: #8b92a7;
  --line: rgba(255, 255, 255, 0.09);
  --mouse-x: 50%;
  --mouse-y: 30%;
  --shell-gutter: clamp(20px, 2.8vw, 28px);
  --content-width: min(1280px, calc(100% - (var(--shell-gutter) * 2)));
  --info-rail-width: min(1280px, calc(100vw - (var(--shell-gutter) * 2)));
  --hero-gap: clamp(28px, 3.4vw, 42px);
  --viewer-offset: clamp(84px, 9vw, 150px);
  --viewer-lift: clamp(-12px, -1.8vh, -20px);
  --viewer-width: 400px;
  --resize-dur: 420ms;
  --resize-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --text-swap-dur: 200ms;
  --text-swap-translate-y: 6px;
  --text-swap-blur: 0px;
  --text-swap-ease: ease-out;
  --page-slide-dur: 420ms;
  --page-slide-distance: 8px;
  --page-blur: 1px;
  --page-slide-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --download-light-angle: .35turn;
}

* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; }

body {
  font-family: "IBM Plex Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 18%, rgba(171, 184, 255, 0.14), transparent 24%),
    radial-gradient(circle at 74% 18%, rgba(244, 198, 229, 0.11), transparent 22%),
    linear-gradient(180deg, var(--bg-top) 0%, #0b1023 42%, var(--bg) 100%);
  background-attachment: fixed;
  overflow: hidden;
}

button, a { font: inherit; }

.page-shell {
  position: relative;
  width: 100%;
  height: 100dvh;
  min-height: 100dvh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 18% 18%, rgba(171, 184, 255, 0.12), transparent 24%),
    radial-gradient(circle at 74% 18%, rgba(244, 198, 229, 0.1), transparent 22%),
    linear-gradient(180deg, rgba(16, 21, 46, .94) 0%, rgba(9, 13, 29, .94) 48%, rgba(6, 8, 17, .98) 100%);
  animation: page-enter var(--page-slide-dur) var(--page-slide-ease) both;
}

.page-shell.is-page-exiting {
  pointer-events: none;
  animation: page-exit 180ms cubic-bezier(.4, 0, .2, 1) both;
}

body.is-detail-view {
  overflow-x: hidden;
  overflow-y: auto;
}

body.is-detail-view .page-shell {
  height: auto;
  min-height: 100dvh;
  overflow: visible;
  padding-bottom: 68px;
  background:
    radial-gradient(circle at 18% 12%, rgba(171, 184, 255, 0.12), transparent 26%),
    radial-gradient(circle at 74% 18%, rgba(244, 198, 229, 0.1), transparent 24%),
    linear-gradient(180deg, rgba(16, 21, 46, .94) 0%, rgba(10, 14, 31, .96) 46%, rgba(6, 8, 17, .98) 100%);
}

body.is-detail-view .page-shell .ambient,
body.is-detail-view .page-shell .grid-overlay {
  position: absolute;
  height: 100%;
  min-height: 100dvh;
}

body.is-detail-view .hero {
  min-height: auto;
}

@keyframes page-enter {
  from {
    opacity: 0;
    transform: translateY(var(--page-slide-distance));
    filter: blur(var(--page-blur));
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes page-exit {
  from {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
  to {
    opacity: 0;
    transform: translateY(calc(var(--page-slide-distance) * -1));
    filter: blur(var(--page-blur));
  }
}

.ambient,
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.ambient-left {
  background: radial-gradient(circle at 18% 24%, rgba(179, 189, 255, 0.12), transparent 24%);
  filter: blur(32px);
}

.ambient-right {
  background: radial-gradient(circle at 72% 26%, rgba(246, 200, 228, 0.12), transparent 18%);
  filter: blur(44px);
}

.grid-overlay {
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.72), transparent 84%);
}

.grid-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(171, 189, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(171, 189, 255, 0.18) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.34;
  mask-image:
    radial-gradient(circle 220px at var(--mouse-x) var(--mouse-y), rgba(0,0,0,.98), transparent 78%),
    linear-gradient(180deg, rgba(0,0,0,.78), transparent 88%);
  mix-blend-mode: screen;
}

.desktop-bar {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--content-width);
  margin: 14px auto 0;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(15, 20, 38, 0.58);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 42px rgba(0,0,0,.18);
  overflow: visible;
}

.desktop-bar__left,
.desktop-bar__right {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(244,246,255,.84);
  font-size: .82rem;
}

.desktop-bar__right {
  flex-shrink: 0;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 7px 12px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 14px;
  background: rgba(255,255,255,.04);
  color: var(--text);
  transition:
    transform 260ms cubic-bezier(.22, 1, .36, 1),
    background-color 260ms ease,
    border-color 260ms ease,
    box-shadow 260ms ease;
}

.status-chip:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.14);
  box-shadow: 0 12px 28px rgba(0,0,0,.18);
}

.status-chip img {
  display: block;
  width: 18px;
  height: 18px;
  border-radius: 6px;
}

.status-chip__ticker {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.hero {
  position: relative;
  z-index: 1;
  width: var(--content-width);
  min-height: calc(100dvh - 148px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(360px, 400px);
  grid-template-areas:
    "copy product"
    "rail rail";
  grid-template-rows: auto auto;
  gap: var(--hero-gap);
  align-items: start;
  align-content: start;
  padding: 12px 0 40px;
}

.hero-copy {
  grid-area: copy;
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding-top: clamp(36px, 7.5vh, 88px);
  padding-right: clamp(12px, 2vw, 28px);
}

.brand {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  box-shadow: 0 18px 36px rgba(0,0,0,.24);
  transition: transform 320ms cubic-bezier(.22, 1, .36, 1), box-shadow 320ms ease, filter 320ms ease;
}

.brand:hover .brand-mark {
  transform: translateY(-2px) rotate(-4deg) scale(1.03);
  box-shadow: 0 24px 48px rgba(0,0,0,.28);
  filter: saturate(1.06);
}

.brand-text {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: .08em;
}

.copy-block {
  display: grid;
  gap: 18px;
}

.hero-kicker {
  margin: 0;
  color: var(--muted);
  font-size: .88rem;
  letter-spacing: .14em;
}

.hero h1 {
  margin: 0;
  max-width: none;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "IBM Plex Sans", sans-serif;
  font-size: clamp(2.55rem, 4.35vw, 4.08rem);
  font-weight: 680;
  line-height: 1.18;
  letter-spacing: -.05em;
}

.hero h1 span {
  display: block;
}

.hero h1 span + span {
  margin-top: 20px;
}

.hero-subtitle {
  margin: 0;
  max-width: 31rem;
  color: rgba(234,239,255,.78);
  font-size: 1rem;
  line-height: 1.95;
}

.subtitle-rotator-line {
  display: inline-flex;
  align-items: center;
  gap: .22em;
  white-space: nowrap;
}

.feature-rotator {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 6.8em;
  min-height: 2.08em;
  margin: 0 .18em;
  padding: .22em .82em;
  white-space: nowrap;
  vertical-align: baseline;
  overflow: hidden;
  isolation: isolate;
  border-radius: .82em;
  background:
    linear-gradient(135deg, rgba(252, 223, 239, 0.24), rgba(135, 216, 255, 0.18)),
    rgba(255,255,255,.065);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.1),
    0 10px 26px rgba(0,0,0,.12);
  backdrop-filter: blur(12px);
}

.feature-rotator::before {
  content: "";
  position: absolute;
  inset: .12em;
  border-radius: .9em;
  background: linear-gradient(135deg, rgba(252, 223, 239, 0.2), rgba(135, 216, 255, 0.15));
  opacity: .34;
  filter: blur(12px);
  z-index: -1;
}

.t-text-swap {
  position: absolute;
  left: 50%;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(248, 249, 255, 0.98);
  font-weight: 600;
  letter-spacing: .015em;
  line-height: 1.2;
  transform: translate(-50%, calc(-50% + .03em));
  opacity: 1;
  transition:
    transform var(--text-swap-dur) var(--text-swap-ease),
    filter var(--text-swap-dur) var(--text-swap-ease),
    opacity var(--text-swap-dur) var(--text-swap-ease);
  will-change: transform, filter, opacity;
}

.t-text-swap.is-exit {
  opacity: 0;
  transform: translate(-50%, calc(-50% + .03em - var(--text-swap-translate-y)));
  filter: blur(var(--text-swap-blur));
}

.t-text-swap.is-enter-start {
  opacity: 0;
  transform: translate(-50%, calc(-50% + .03em + var(--text-swap-translate-y)));
  filter: blur(var(--text-swap-blur));
  transition: none;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.download-button {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-width: 148px;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  color: #07111f;
  text-decoration: none;
  font-weight: 700;
  background: linear-gradient(135deg, #fcdfef 0%, #bdd3ff 48%, #87d8ff 100%);
  box-shadow: 0 14px 32px rgba(124,149,255,.24), inset 0 1px 0 rgba(255,255,255,.55);
  transition: transform 240ms cubic-bezier(.22, 1, .36, 1), box-shadow 240ms ease, filter 240ms ease;
}

.download-button::before,
.download-button::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}

.download-button::before {
  z-index: 2;
  border: 1px solid transparent;
  background: linear-gradient(90deg, rgba(134,115,229,.72) 0%, rgba(0,153,229,.72) 100%) border-box;
  -webkit-mask-image: linear-gradient(#fff 0 0), linear-gradient(#fff 0 0);
  -webkit-mask-position: 0 0, 0 0;
  -webkit-mask-size: auto, auto;
  -webkit-mask-repeat: repeat, repeat;
  -webkit-mask-clip: padding-box, border-box;
  -webkit-mask-origin: padding-box, border-box;
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.download-button::after {
  z-index: 1;
  border: 2px solid transparent;
  background:
    conic-gradient(
      from var(--download-light-angle),
      transparent 60%,
      rgba(255,255,255,.98),
      rgba(255,255,255,.07) 80%,
      transparent
    ) border-box;
  -webkit-mask-image: linear-gradient(#fff 0 0), linear-gradient(#fff 0 0);
  -webkit-mask-position: 0 0, 0 0;
  -webkit-mask-size: auto, auto;
  -webkit-mask-repeat: repeat, repeat;
  -webkit-mask-clip: padding-box, border-box;
  -webkit-mask-origin: padding-box, border-box;
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 1;
  animation: download-comet 2.5s linear infinite;
  mix-blend-mode: screen;
}

.download-button {
  -webkit-mask-image: -webkit-radial-gradient(white, black);
}

.download-button > * {
  position: relative;
  z-index: 3;
}

.download-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(124,149,255,.32), inset 0 1px 0 rgba(255,255,255,.58);
  filter: saturate(1.05);
}

@property --download-light-angle {
  syntax: "<angle>";
  inherits: true;
  initial-value: .5turn;
}

@keyframes download-comet {
  to {
    --download-light-angle: 1.5turn;
  }
}

.guide-link {
  color: rgba(234, 239, 255, .74);
  font-size: .94rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 220ms ease, transform 220ms cubic-bezier(.22, 1, .36, 1);
}

.guide-link:hover {
  color: rgba(255, 255, 255, .96);
  transform: translateX(2px);
}

.product-shot {
  grid-area: product;
  position: relative;
  display: flex;
  justify-content: flex-start;
  align-self: start;
  padding-top: clamp(10px, 2vh, 20px);
  padding-right: 0;
  justify-self: end;
}

.product-shot::before {
  content: "";
  position: absolute;
  right: clamp(0px, 1.8vw, 28px);
  top: clamp(78px, 10vh, 102px);
  width: clamp(380px, 38vw, 520px);
  height: clamp(380px, 38vw, 520px);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(236, 197, 224, 0.18) 0%, rgba(125, 138, 255, 0.12) 42%, transparent 72%);
  filter: blur(34px);
  opacity: .9;
  pointer-events: none;
}

.product-viewer {
  position: relative;
  perspective: 900px;
  --comet-rotate-x: 0deg;
  --comet-rotate-y: 0deg;
  --comet-glow-x: 50%;
  --comet-glow-y: 50%;
  --comet-glow-opacity: 0;
  width: min(100%, var(--viewer-width));
  margin-top: 0;
  transform: translate3d(var(--viewer-offset), var(--viewer-lift), 0);
  opacity: 1;
  filter: none;
  cursor: pointer;
}

.viewer-frame {
  position: relative;
  border-radius: 30px;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  line-height: 0;
  transform:
    rotateX(var(--comet-rotate-x))
    rotateY(var(--comet-rotate-y))
    translateZ(0);
  transform-style: preserve-3d;
  transition:
    transform 520ms cubic-bezier(.16, 1, .3, 1),
    width var(--resize-dur) var(--resize-ease),
    height var(--resize-dur) var(--resize-ease);
  will-change: transform, width, height;
}

.t-resize {
  will-change: width, height;
}

.viewer-frame.is-resizing {
  overflow: hidden;
}

.viewer-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background:
    radial-gradient(
      circle 220px at var(--comet-glow-x) var(--comet-glow-y),
      rgba(255,255,255,.08),
      rgba(135,216,255,.035) 38%,
      transparent 76%
    );
  opacity: var(--comet-glow-opacity);
  pointer-events: none;
  mix-blend-mode: screen;
  transition: opacity 240ms ease;
}

.viewer-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: inherit;
  pointer-events: none;
}

.viewer-image {
  display: block;
  position: relative;
  z-index: 0;
  width: 100%;
  height: auto;
  border-radius: 30px;
  transition:
    opacity 220ms cubic-bezier(.22, 1, .36, 1),
    transform 220ms cubic-bezier(.22, 1, .36, 1);
  will-change: opacity, transform;
}

.viewer-image.is-swapping {
  opacity: .36;
  transform: translateY(4px);
}

.viewer-detail-trigger {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 14px auto 0;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  background: rgba(13, 18, 33, .44);
  color: rgba(230, 236, 255, .78);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .02em;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05), 0 10px 24px rgba(0,0,0,.12);
  cursor: pointer;
  transition:
    color 220ms ease,
    border-color 220ms ease,
    background-color 220ms ease,
    transform 220ms cubic-bezier(.22, 1, .36, 1);
}

.viewer-detail-trigger svg {
  width: 12px;
  height: 12px;
  color: rgba(135, 216, 255, .9);
  transform: translateY(-1px);
  transition: transform 220ms cubic-bezier(.22, 1, .36, 1);
}

.viewer-detail-trigger:hover {
  transform: translateY(-1px);
  color: rgba(255,255,255,.94);
  border-color: rgba(135,216,255,.26);
  background: rgba(18, 26, 46, .62);
}

.viewer-detail-trigger:hover svg {
  transform: translate(1px, -2px);
}

.info-rail {
  grid-area: rail;
  position: relative;
  z-index: 2;
  justify-self: start;
  display: flex;
  gap: 16px;
  width: var(--info-rail-width);
  margin-top: 12px;
}

.info-card {
  position: relative;
  overflow: hidden;
  flex: 1 1 0;
  min-width: 0;
  padding: 14px 16px 16px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px;
  background: rgba(12, 16, 29, 0.3);
  box-shadow:
    0 10px 24px rgba(0,0,0,.1),
    inset 0 1px 0 rgba(255,255,255,.03);
  backdrop-filter: blur(14px);
  transition:
    transform 240ms cubic-bezier(.22, 1, .36, 1),
    border-color 240ms ease,
    background-color 240ms ease,
    box-shadow 240ms ease;
}

.info-card::before,
.info-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 240ms ease;
}

.info-card::before {
  background:
    radial-gradient(circle 220px at 18% 8%, rgba(255,255,255,.045), transparent 56%),
    radial-gradient(circle 260px at 78% 0%, rgba(135,216,255,.032), transparent 60%);
  mix-blend-mode: screen;
}

.info-card::after {
  border: 1px solid rgba(135,216,255,.105);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045);
}

.info-card:hover {
  transform: translateY(-3px);
  border-color: rgba(135,216,255,.135);
  background: rgba(15, 21, 38, .42);
  box-shadow:
    0 18px 36px rgba(0,0,0,.16),
    0 0 30px rgba(135,216,255,.028),
    inset 0 1px 0 rgba(255,255,255,.05);
}

.info-card:hover::before {
  opacity: 1;
}

.info-card:hover::after {
  opacity: .68;
}

.info-card__label {
  position: relative;
  z-index: 1;
  display: block;
  margin-bottom: 8px;
  color: rgba(174, 182, 203, 0.72);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.info-card__value {
  position: relative;
  z-index: 1;
  display: block;
  color: rgba(245, 247, 252, 0.95);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
}

.info-card__text {
  position: relative;
  z-index: 1;
  margin: 8px 0 0;
  color: rgba(198, 206, 225, 0.72);
  font-size: .88rem;
  line-height: 1.6;
}

@media (max-width: 1360px) {
  :root {
    --viewer-width: 400px;
  }

  .hero {
    grid-template-columns: minmax(300px, 0.92fr) minmax(340px, 400px);
  }
}

@media (max-width: 1180px) {
  body {
    overflow-x: hidden;
    overflow-y: auto;
  }

  .page-shell {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
    padding-bottom: 68px;
    background:
      radial-gradient(circle at 18% 12%, rgba(171, 184, 255, 0.12), transparent 26%),
      radial-gradient(circle at 74% 18%, rgba(244, 198, 229, 0.1), transparent 24%),
      linear-gradient(180deg, rgba(16, 21, 46, .94) 0%, rgba(10, 14, 31, .96) 46%, rgba(6, 8, 17, .98) 100%);
  }

  .page-shell .ambient,
  .page-shell .grid-overlay {
    position: absolute;
    height: 100%;
    min-height: 100dvh;
  }

  :root {
    --viewer-width: 500px;
    --viewer-offset: 0px;
    --viewer-lift: 0px;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "product"
      "rail";
    gap: 34px;
    min-height: auto;
    align-items: start;
    padding-bottom: 32px;
  }

  .hero-copy {
    padding-top: 28px;
  }

  .product-shot {
    justify-content: center;
    padding-top: 18px;
    padding-right: 0;
    align-self: start;
  }

  .product-shot::before {
    right: 50%;
    transform: translateX(50%);
    top: 88px;
    width: 460px;
    height: 460px;
  }

  .product-viewer {
    margin-top: 18px;
  }

  .info-rail { margin-top: 4px; }

}

@media (max-height: 820px) {
  body {
    overflow-x: hidden;
    overflow-y: auto;
  }

  .page-shell {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
    padding-bottom: 68px;
    background:
      radial-gradient(circle at 18% 12%, rgba(171, 184, 255, 0.12), transparent 26%),
      radial-gradient(circle at 74% 18%, rgba(244, 198, 229, 0.1), transparent 24%),
      linear-gradient(180deg, rgba(16, 21, 46, .94) 0%, rgba(10, 14, 31, .96) 46%, rgba(6, 8, 17, .98) 100%);
  }

  .page-shell .ambient,
  .page-shell .grid-overlay {
    position: absolute;
    height: 100%;
    min-height: 100dvh;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  :root {
    --shell-gutter: 10px;
  }

  .desktop-bar {
    padding: 10px 12px;
  }

  .desktop-bar__left span:nth-child(n + 4) {
    display: none;
  }

  .desktop-bar__right {
    gap: 8px;
  }

  .desktop-bar__right span {
    display: none;
  }

  .hero {
    gap: 26px;
    padding-top: 10px;
  }

  .hero h1 {
    font-size: clamp(2.3rem, 12vw, 3.35rem);
  }

  .hero h1 span + span {
    margin-top: 14px;
  }

  .hero-copy {
    padding-top: 16px;
  }

  .status-chip img {
    width: 18px;
    height: 18px;
  }

  .feature-rotator {
    min-width: 5.8em;
  }

  .product-shot {
    padding-top: 8px;
  }

  .product-viewer {
    margin-top: 12px;
  }

  .info-rail {
    flex-direction: column;
    gap: 12px;
  }

  .info-card {
    padding: 14px 15px 15px;
    border-radius: 16px;
  }

}

@media (prefers-reduced-motion: reduce) {
  .status-chip,
  .brand-mark,
  .download-button,
  .download-button::before,
  .product-viewer,
  .viewer-frame,
  .viewer-frame::after,
  .info-card,
  .info-card::before,
  .info-card::after,
  .page-shell,
  .t-text-swap,
  .viewer-image {
    transition: none !important;
    animation: none !important;
  }
}

.usage-page {
  overflow: auto;
  min-height: 100%;
  background:
    radial-gradient(circle at 18% 18%, rgba(171, 184, 255, 0.14), transparent 26%),
    radial-gradient(circle at 74% 20%, rgba(244, 198, 229, 0.1), transparent 26%),
    linear-gradient(180deg, var(--bg-top) 0%, #0b0f20 42%, var(--bg) 100%);
  background-attachment: fixed;
}

.usage-shell {
  min-height: 100dvh;
  height: auto;
  overflow: visible;
  padding-bottom: 64px;
  background: transparent;
}

.usage-shell .ambient,
.usage-shell .grid-overlay {
  position: fixed;
}

.usage-brand,
.usage-nav {
  display: inline-flex;
  align-items: center;
}

.usage-brand {
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.usage-brand img {
  width: 26px;
  height: 26px;
  border-radius: 8px;
}

.usage-nav {
  gap: 0;
}

.usage-intro__topline {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
}

.usage-back {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  color: rgba(234, 239, 255, .78);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  background: rgba(255,255,255,.035);
  transition: color 220ms ease, border-color 220ms ease, background-color 220ms ease;
}

.usage-back:hover {
  color: rgba(255, 255, 255, .96);
  border-color: rgba(255,255,255,.2);
  background: rgba(255,255,255,.06);
}

.usage-download {
  min-width: 118px;
  min-height: 38px;
  padding: 0 18px;
  font-size: .9rem;
}

.usage-main {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: clamp(38px, 6vh, 62px);
}

.usage-intro {
  margin-bottom: 30px;
}

.usage-intro h1 {
  margin: 12px 0 0;
  color: rgba(248, 249, 255, .98);
  font-size: clamp(1.85rem, 3.6vw, 2.55rem);
  font-weight: 700;
  line-height: 1.22;
}

.usage-intro p {
  max-width: 520px;
  margin: 14px 0 0;
  color: rgba(198, 206, 225, .76);
  font-size: .98rem;
  line-height: 1.75;
}

.usage-steps {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-top: 0;
}

.usage-steps::before {
  content: none;
}

.usage-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  min-height: auto;
  padding: 12px 0;
}

.usage-step span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(135, 216, 255, .08);
  color: rgba(135, 216, 255, .86);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  grid-row: 1 / span 2;
}

.usage-step h2,
.usage-notes h2 {
  margin: 0;
  color: rgba(248, 249, 255, .96);
  font-size: 1.08rem;
  line-height: 1.45;
}

.usage-step h2,
.usage-step p {
  grid-column: 2;
}

.usage-step p,
.usage-note-grid p {
  margin: 8px 0 0;
  color: rgba(198, 206, 225, .74);
  font-size: .95rem;
  line-height: 1.75;
}

.usage-notes {
  margin-top: 30px;
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255,255,255,.035);
}

.usage-notes h2 {
  margin-top: 0;
}

.usage-note-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 14px;
}

.usage-note-grid p {
  position: relative;
  padding-left: 18px;
  margin-top: 0;
}

.usage-note-grid p::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(135, 216, 255, .78);
}

.site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 14px;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 20px;
  text-align: center;
  color: rgba(198, 206, 225, .58);
  font-size: .78rem;
  line-height: 1.6;
  background: rgba(6, 8, 17, .84);
  border-top: 1px solid rgba(255, 255, 255, .07);
  border-bottom: 1px solid rgba(255, 255, 255, .05);
  backdrop-filter: blur(16px);
}

.site-footer a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}

.site-footer a:hover {
  color: rgba(248, 249, 255, .84);
}

@media (max-width: 820px) {
  .usage-main {
    width: min(calc(100% - 28px), 760px);
    padding-top: 38px;
  }

  .usage-nav {
    gap: 12px;
  }

  .usage-step {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 14px;
  }
}