:root {
  --sky: #1c1c20;
  --sky-soft: #242428;
  --blue: #ff6a1a;
  --blue-deep: #ff6a1a;
  --ink: #101012;
  --ink-soft: rgba(255, 250, 241, 0.74);
  --muted: #9b968d;
  --line: rgba(255, 250, 241, 0.14);
  --paper: #151518;
  --white: #fffaf1;
  --max: 1500px;
  --header: 78px;
  --sans: Inter, Helvetica, Arial, "PingFang SC", "Microsoft YaHei UI", "Noto Sans SC", sans-serif;
  --mono: "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--white);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body.modal-open {
  overflow: hidden;
}

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

button {
  color: inherit;
  font: inherit;
}

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

img,
svg {
  display: block;
}

img {
  max-width: 100%;
}

::selection {
  background: var(--blue);
  color: #17130f;
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(22px, 4vw, 64px);
  border-bottom: 1px solid transparent;
  color: var(--white);
  transition: background 220ms ease, border-color 220ms ease, color 220ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(16, 16, 18, 0.82);
  backdrop-filter: blur(18px) saturate(135%);
}

.site-header.is-dark {
  color: var(--white);
}

.site-header.is-dark.is-scrolled {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(16, 16, 18, 0.86);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 820;
  letter-spacing: 0.12em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.8vw, 42px);
  font-size: 13px;
  font-weight: 680;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 -7px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-download {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 760;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-download:hover,
.nav-download:focus-visible {
  background: var(--blue);
  color: #17130f;
  transform: translateY(-1px);
}

.site-header.is-dark .nav-download:hover,
.site-header.is-dark .nav-download:focus-visible {
  background: var(--blue);
  color: #17130f;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: var(--sky);
  color: var(--white);
  isolation: isolate;
}

.hero-grid {
  position: absolute;
  z-index: -4;
  inset: 0;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(255, 250, 241, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 250, 241, 0.07) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, transparent 0, #000 18%, #000 78%, transparent 100%);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -3;
  top: 12%;
  right: -8%;
  width: min(68vw, 980px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 106, 26, 0.26);
  border-radius: 50%;
}

.hero-wordmark {
  position: absolute;
  z-index: -2;
  left: -0.04em;
  bottom: -0.12em;
  color: rgba(255, 250, 241, 0.045);
  font-size: clamp(112px, 20vw, 360px);
  font-weight: 820;
  letter-spacing: -0.085em;
  line-height: 0.78;
  white-space: nowrap;
  user-select: none;
}

.hero-copy {
  position: relative;
  z-index: 12;
  width: min(42vw, 650px);
  padding: clamp(150px, 18vh, 220px) 0 110px clamp(22px, 5vw, 82px);
}

.eyebrow {
  margin: 0 0 26px;
  color: var(--blue-deep);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero h1,
.section-intro h2,
.download-main h2 {
  margin: 0;
  font-weight: 220;
  letter-spacing: -0.062em;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(60px, 7.1vw, 118px);
  line-height: 0.96;
}

.hero h1 span {
  display: inline-block;
  white-space: nowrap;
}

.hero-lead {
  max-width: 540px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.3vw, 21px);
  font-weight: 480;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 54px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 760;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-3px);
}

.button-primary {
  background: var(--blue);
  color: #17130f;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--white);
}

.text-link {
  position: relative;
  padding: 8px 0;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 680;
}

.text-link span {
  display: inline-block;
  margin-left: 7px;
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translate(3px, 3px);
}

.hero-stage {
  position: absolute;
  z-index: 4;
  top: 50%;
  right: clamp(-130px, -3vw, -30px);
  width: min(67vw, 1050px);
  aspect-ratio: 1.12;
  transform: translateY(-48%);
}

.hero-halo {
  position: absolute;
  z-index: -2;
  inset: 4% 10% 8% 8%;
  border-radius: 50%;
  background: rgba(255, 106, 26, 0.15);
  filter: blur(90px);
}

.hero-device {
  position: absolute;
  z-index: 4;
  top: 8%;
  left: 12%;
  width: 77%;
  filter: drop-shadow(0 38px 42px rgba(0, 0, 0, 0.52));
  transform: rotate(-1.6deg);
  transform-origin: center;
}

.hero-orbit {
  position: absolute;
  z-index: -1;
  inset: -2% 4% 0 auto;
  width: 80%;
  height: 80%;
  color: rgba(255, 250, 241, 0.18);
  stroke: currentColor;
  stroke-width: 1;
}

.hero-svg-scene {
  position: absolute;
  z-index: 6;
  inset: 0;
  pointer-events: none;
  transform: translateY(var(--hero-scroll, 0));
  transition: translate 500ms cubic-bezier(.2,.8,.2,1);
}

.hero-orbit-main {
  animation: orbitSpin 28s linear infinite;
  transform-origin: 50% 50%;
}

.hero-signal,
.hero-glyph {
  position: absolute;
  color: var(--blue);
  stroke: currentColor;
  stroke-width: 1.4;
  opacity: 0.75;
}

.hero-signal-a {
  top: 3%;
  right: 13%;
  width: clamp(92px, 12vw, 180px);
  animation: signalPulse 4.8s ease-in-out infinite;
}

.hero-signal-b {
  left: 2%;
  bottom: 9%;
  width: clamp(84px, 10vw, 150px);
  color: rgba(255, 250, 241, 0.42);
  animation: orbitSpin 18s linear infinite reverse;
}

.hero-glyph {
  top: 13%;
  left: 8%;
  width: clamp(130px, 18vw, 250px);
  color: rgba(255, 250, 241, 0.4);
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
  animation: glyphDraw 2.2s 0.4s ease forwards, glyphFloat 5.8s 2.6s ease-in-out infinite;
}

.hero-cross {
  position: absolute;
  width: 48px;
  height: 48px;
  opacity: 0.62;
}

.hero-cross::before,
.hero-cross::after {
  content: "";
  position: absolute;
  background: var(--blue);
}

.hero-cross::before { top: 22px; left: 0; width: 48px; height: 3px; }
.hero-cross::after { top: 0; left: 22px; width: 3px; height: 48px; }
.hero-cross-a { right: 5%; bottom: 25%; animation: crossDrift 6s ease-in-out infinite; }
.hero-cross-b { top: 34%; left: 3%; transform: scale(0.62) rotate(45deg); animation: crossDrift 5s 1s ease-in-out infinite reverse; }

@keyframes orbitSpin { to { transform: rotate(360deg); } }
@keyframes signalPulse { 50% { opacity: 0.28; transform: scale(1.08); } }
@keyframes glyphDraw { to { stroke-dashoffset: 0; } }
@keyframes glyphFloat { 50% { transform: translateY(-12px) rotate(1.5deg); } }
@keyframes crossDrift { 50% { transform: translate(10px, -16px) rotate(90deg); } }

.scroll-cue {
  position: absolute;
  z-index: 20;
  left: clamp(22px, 5vw, 82px);
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 740;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scroll-cue i {
  display: block;
  width: 72px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 250, 241, 0.2);
}

.scroll-cue i::after {
  content: "";
  display: block;
  width: 34px;
  height: 1px;
  background: var(--blue);
  animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: translateX(-40px); }
  100% { transform: translateX(80px); }
}

.experience {
  position: relative;
  padding: clamp(100px, 13vw, 190px) clamp(22px, 5vw, 82px) clamp(120px, 15vw, 220px);
  background: var(--paper);
  color: var(--white);
}

.experience::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(22px, 5vw, 82px);
  right: clamp(22px, 5vw, 82px);
  height: 1px;
  background: var(--line);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  gap: clamp(40px, 8vw, 130px);
  align-items: end;
  max-width: var(--max);
  margin: 0 auto clamp(88px, 11vw, 160px);
}

.section-intro .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.section-intro h2 {
  max-width: 1020px;
  font-size: clamp(55px, 7.2vw, 122px);
  line-height: 0.97;
}

.section-intro-title-only h2 {
  grid-column: 1 / -1;
}

.section-intro > p:last-child {
  max-width: 470px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 1.45vw, 21px);
  font-weight: 480;
  line-height: 1.75;
}

.experience-stage {
  display: grid;
  grid-template-columns: minmax(0, 0.48fr) minmax(420px, 0.52fr);
  gap: clamp(52px, 9vw, 150px);
  align-items: start;
  max-width: var(--max);
  margin: 0 auto;
}

.feature-story {
  display: contents;
}

.feature-list {
  border-top: 1px solid var(--line);
}

.feature-progress {
  display: none;
}

.feature-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 24px;
  padding: clamp(38px, 5vw, 72px) 0;
  border-bottom: 1px solid var(--line);
  opacity: 0.4;
  transition: opacity 260ms ease, transform 260ms ease;
}

.feature-item.is-active {
  opacity: 1;
  transform: translateX(10px);
}

.feature-inline-visual {
  display: none;
}

.feature-number {
  padding-top: 4px;
  color: var(--blue-deep);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 760;
}

.feature-tag {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 720;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feature-item h3 {
  margin: 0;
  font-size: clamp(34px, 3.2vw, 54px);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.feature-item > div:last-child > p:not(.feature-tag) {
  max-width: 630px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 480;
  line-height: 1.78;
}

.experience-visual {
  position: sticky;
  top: calc(var(--header) + 7vh);
}

.visual-label {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 720;
  letter-spacing: 0.1em;
}

.visual-frame {
  position: relative;
  min-height: min(66vw, 720px);
  overflow: hidden;
  background: #1c1c20;
}

.visual-frame > [data-experience-image] {
  position: absolute;
  z-index: 2;
  inset: 50% auto auto 50%;
  width: 92%;
  max-height: 92%;
  object-fit: contain;
  filter: drop-shadow(0 30px 32px rgba(0, 0, 0, 0.5));
  transform: translate(-50%, -50%);
  transition: opacity 260ms ease, transform 440ms cubic-bezier(.2,.8,.2,1);
}

.grip-composite {
  --hand-width: 80.541%;
  --hand-top: 54.139%;
  --hand-overhang: 46.795%;
  position: absolute;
  z-index: 2;
  isolation: isolate;
  width: 92%;
  aspect-ratio: 1295 / 1208;
  opacity: 0;
  overflow: visible;
  pointer-events: none;
  transition: opacity 320ms ease;
}

.grip-composite-desktop {
  top: 50%;
  left: 4%;
  transform: translateY(-50%);
}

.grip-device {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 30px 32px rgba(0, 0, 0, 0.5));
}

.grip-device-base {
  z-index: 2;
}

.grip-device-hotzone {
  z-index: 3;
  opacity: 0;
  transition: opacity 560ms cubic-bezier(.2,.8,.2,1);
}

.grip-hand-anchor {
  position: absolute;
  top: var(--hand-top);
  z-index: 1;
  width: var(--hand-width);
  aspect-ratio: 1043 / 1208;
  opacity: 0;
  transition: opacity 320ms ease, transform 720ms cubic-bezier(.16,1,.3,1);
}

.grip-hand-anchor img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.grip-hand-left {
  left: calc(var(--hand-overhang) * -1);
  transform: translateX(-18%);
}

.grip-hand-right {
  right: calc(var(--hand-overhang) * -1);
  transform: translateX(18%);
}

.grip-hand-right img {
  transform: scaleX(-1);
}

.grip-hand-front {
  z-index: 4;
}

.visual-frame.is-fold-scene {
  overflow: visible;
}

.visual-frame.is-fold-scene > [data-experience-image] {
  opacity: 0;
  transform: translate(-50%, -50%);
}

.visual-frame.is-fold-scene .grip-composite-desktop {
  opacity: 1;
}

.visual-frame.is-grip-scene .grip-device-hotzone,
.feature-item.is-active .grip-device-hotzone {
  opacity: 1;
}

.visual-frame.is-grip-scene .grip-hand-anchor,
.feature-item.is-active .grip-hand-anchor {
  opacity: 1;
  transform: translateX(0);
}

.visual-frame > [data-experience-image].is-exiting-up {
  opacity: 0;
  transform: translate(-50%, -58%);
}

.visual-frame > [data-experience-image].is-exiting-down {
  opacity: 0;
  transform: translate(-50%, -42%);
}

.visual-frame > [data-experience-image].is-entering-from-bottom {
  opacity: 0;
  transform: translate(-50%, -42%);
  transition: none;
}

.visual-frame > [data-experience-image].is-entering-from-top {
  opacity: 0;
  transform: translate(-50%, -58%);
  transition: none;
}

.visual-frame.is-button-scene > [data-experience-image] {
  opacity: 0;
  transform: translate(-50%, -48%) scale(0.94);
}

.button-cloud-desktop {
  position: absolute;
  z-index: 3;
  inset: 7%;
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 320ms ease, transform 500ms cubic-bezier(.2,.8,.2,1);
  pointer-events: none;
}

.visual-frame.is-button-scene .button-cloud-desktop {
  opacity: 1;
  transform: scale(1);
}

.control-piece {
  position: absolute;
  z-index: 1;
  object-fit: contain;
  filter: drop-shadow(0 22px 22px rgba(0, 0, 0, 0.48));
  animation: controlFloat var(--float-time, 5.4s) ease-in-out var(--float-delay, 0s) infinite;
  will-change: translate, scale;
}

.control-dpad {
  top: 24%;
  left: 2%;
  width: 43%;
  transform: rotate(-8deg);
  --float-time: 6.2s;
}

.control-abxy {
  top: 16%;
  right: 1%;
  width: 40%;
  transform: rotate(9deg);
  --float-time: 5.8s;
  --float-delay: -1.4s;
}

.control-stick {
  top: 43%;
  left: 43%;
  width: 17%;
  --float-time: 4.6s;
  --float-delay: -2.2s;
}

.control-plus,
.control-minus,
.control-l,
.control-r {
  width: 11%;
}

.control-plus { top: 8%; left: 34%; --float-delay: -0.8s; }
.control-minus { right: 29%; bottom: 8%; --float-delay: -2.8s; }
.control-l { left: 16%; bottom: 8%; --float-delay: -1.8s; }
.control-r { right: 13%; bottom: 25%; --float-delay: -3.4s; }

@keyframes controlFloat {
  0%, 100% { translate: 0 0; scale: 1; }
  50% { translate: 0 -14px; scale: 1.025; }
}

.visual-blueprint {
  position: absolute;
  z-index: 1;
  inset: 8%;
  border: 1px solid rgba(255, 250, 241, 0.12);
}

.visual-blueprint::before,
.visual-blueprint::after {
  content: "";
  position: absolute;
  background: rgba(255, 250, 241, 0.1);
}

.visual-blueprint::before { top: 50%; left: 0; right: 0; height: 1px; }
.visual-blueprint::after { top: 0; bottom: 0; left: 50%; width: 1px; }

.visual-blueprint span {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid rgba(255, 106, 26, 0.7);
}

.visual-blueprint span:nth-child(1) { top: -5px; left: -5px; }
.visual-blueprint span:nth-child(2) { top: -5px; right: -5px; }
.visual-blueprint span:nth-child(3) { bottom: -5px; left: -5px; }
.visual-blueprint span:nth-child(4) { right: -5px; bottom: -5px; }

.visual-note {
  max-width: 620px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.download {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding: clamp(110px, 12vw, 180px) clamp(22px, 5vw, 82px) 0;
  background: #0b0b0c;
  color: var(--white);
  isolation: isolate;
}

.download::before {
  content: "";
  position: absolute;
  z-index: -4;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 20% 44%, #000 0, transparent 58%);
}

.download-art {
  position: absolute;
  z-index: -2;
  top: 5%;
  right: -8%;
  width: min(58vw, 900px);
  aspect-ratio: 1;
  opacity: 0.38;
}

.download-ring {
  position: absolute;
  inset: 8%;
  border: 1px solid var(--blue);
  border-radius: 50%;
}

.mini-covers img {
  position: absolute;
  width: clamp(82px, 9vw, 148px);
  border: 2px solid rgba(255, 255, 255, 0.78);
}

.mini-covers img:nth-child(1) { top: 5%; left: 42%; transform: rotate(-8deg); }
.mini-covers img:nth-child(2) { top: 25%; right: 0; transform: rotate(14deg); }
.mini-covers img:nth-child(3) { right: 13%; bottom: 16%; transform: rotate(-12deg); }
.mini-covers img:nth-child(4) { bottom: 0; left: 36%; transform: rotate(10deg); }
.mini-covers img:nth-child(5) { bottom: 22%; left: 0; transform: rotate(-14deg); }
.mini-covers img:nth-child(6) { top: 19%; left: 4%; transform: rotate(8deg); }

.download-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.52fr) minmax(420px, 0.48fr);
  gap: clamp(60px, 10vw, 170px);
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow-light {
  color: var(--blue);
}

.download-main h2 {
  max-width: 820px;
  font-size: clamp(54px, 6vw, 100px);
  line-height: 0.96;
}

.download-main h2 span {
  white-space: nowrap;
}

.download-lead {
  margin: 32px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 660;
  letter-spacing: 0.06em;
}

.build-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 620px;
  margin: 44px 0 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.build-meta div {
  padding: 18px 20px 18px 0;
}

.build-meta div + div {
  padding-left: 20px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}

.build-meta dt {
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.48);
  font-family: var(--mono);
  font-size: 10px;
}

.build-meta dd {
  margin: 0;
  font-size: 15px;
  font-weight: 680;
}

.button-light {
  background: var(--blue);
  color: #17130f;
}

.download-main .button-light {
  margin-top: clamp(46px, 5vw, 72px);
}

.button-light:hover,
.button-light:focus-visible {
  background: var(--white);
}

.checksum {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.38);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.6;
}

.install-guide {
  align-self: start;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 30px;
}

.guide-head h3 {
  margin: 0;
  font-size: clamp(34px, 3.2vw, 52px);
  font-weight: 300;
  letter-spacing: -0.04em;
}

.steps {
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.steps li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.step-with-resources {
  padding-bottom: 26px !important;
}

.steps li > span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 740;
}

.steps strong {
  display: block;
  margin-bottom: 7px;
  font-size: 17px;
}

.steps p {
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  line-height: 1.65;
}

.resource-downloads {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.resource-link {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 13px;
  align-items: center;
  min-height: 78px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

a.resource-link:hover,
a.resource-link:focus-visible {
  border-color: var(--blue);
  background: rgba(255, 106, 26, 0.1);
  transform: translateY(-2px);
}

.resource-link.is-disabled {
  opacity: 0.45;
}

.cloud-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  background: var(--blue);
  color: #17130f;
}

.cloud-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linejoin: bevel;
}

.resource-link strong,
.resource-link small {
  display: block;
}

.resource-link strong {
  margin-bottom: 5px;
  font-size: 14px;
}

.resource-link small {
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
}

.resource-link b {
  font-size: 16px;
  font-weight: 400;
}

.other-projects {
  max-width: var(--max);
  margin: clamp(110px, 12vw, 180px) auto 0;
}

.other-projects-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 28px;
}

.other-projects-head .eyebrow {
  margin: 0 0 7px;
}

.other-projects-head h3 {
  margin: 0;
  font-size: clamp(32px, 3.2vw, 50px);
  font-weight: 300;
  letter-spacing: -0.04em;
}

.other-projects-title {
  width: min(72%, 820px);
}

.other-projects-description {
  max-width: 680px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
}

.project-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(36px, 5vw, 82px);
}

.project-link {
  position: relative;
  display: grid;
  grid-template-columns: 28px 78px minmax(0, 1fr) auto;
  gap: clamp(14px, 1.6vw, 24px);
  align-items: center;
  min-width: 0;
  padding: 26px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: border-color 200ms ease;
}

.project-link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 1px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 280ms ease;
}

.project-link:hover,
.project-link:focus-visible {
  border-top-color: var(--blue);
  outline: none;
}

.project-link:hover::after,
.project-link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.project-number {
  align-self: start;
  padding-top: 4px;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 740;
}

.project-icon {
  display: grid;
  width: 78px;
  height: 78px;
  overflow: hidden;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 19px;
  background: #202025;
}

.project-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 280ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.project-copy {
  min-width: 0;
}

.project-copy strong,
.project-copy small {
  display: block;
}

.project-copy strong {
  margin-bottom: 9px;
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 500;
  letter-spacing: -0.025em;
}

.project-copy small {
  overflow: hidden;
  color: rgba(255, 255, 255, 0.52);
  font-size: 13px;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-arrow {
  color: rgba(255, 255, 255, 0.66);
  font-size: 24px;
  font-weight: 300;
  transition: color 200ms ease, transform 200ms ease;
}

.project-link:hover .project-icon img,
.project-link:focus-visible .project-icon img {
  transform: scale(1.06);
}

.project-link:hover .project-arrow,
.project-link:focus-visible .project-arrow {
  color: var(--blue);
  transform: translate(4px, -4px);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 34px;
  max-width: var(--max);
  margin: clamp(68px, 8vw, 110px) auto 0;
  padding: 28px 0 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
}

.declaration {
  line-height: 1.7;
}

.developer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.developer-links > span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.developer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--white);
  font-weight: 660;
}

.developer-links a[hidden] {
  display: none;
}

.developer-links img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.download-dialog {
  width: min(92vw, 620px);
  margin: auto;
  padding: clamp(28px, 5vw, 58px);
  overflow: visible;
  border: 0;
  border-radius: 0;
  border: 1px solid rgba(255, 250, 241, 0.18);
  background: #1c1c20;
  color: var(--white);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.48);
}

.download-dialog::backdrop {
  background: rgba(4, 4, 5, 0.78);
  backdrop-filter: blur(10px);
}

.download-dialog[open] {
  animation: dialogIn 240ms cubic-bezier(.2,.8,.2,1) both;
}

@keyframes dialogIn {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.dialog-close {
  position: absolute;
  top: 18px;
  right: 20px;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 32px;
  font-weight: 260;
}

.dialog-mark {
  display: grid;
  width: 72px;
  height: 72px;
  margin-bottom: 34px;
  place-items: center;
  background: rgba(255, 106, 26, 0.12);
}

.dialog-mark svg {
  width: 44px;
  height: 44px;
  fill: none;
  stroke: var(--blue-deep);
  stroke-width: 2;
}

.download-dialog h2 {
  margin: 0;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 280;
  letter-spacing: -0.05em;
  line-height: 1.03;
}

.dialog-copy {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 480;
  line-height: 1.78;
}

.dialog-copy strong {
  color: var(--white);
}

.dialog-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.button-quiet {
  border-color: var(--line);
  background: transparent;
}

.fc-link {
  display: inline-block;
  margin-top: 28px;
  border-bottom: 1px solid currentColor;
  color: var(--muted);
  font-size: 13px;
  font-weight: 620;
  line-height: 1.8;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.8,.2,1);
}

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

@media (min-width: 821px) {
  .feature-item {
    min-height: clamp(420px, 58vh, 620px);
    align-content: center;
  }
}

@media (min-width: 1101px) {
  .hero-copy {
    width: min(46vw, 720px);
    padding-left: clamp(22px, 5vw, 82px);
  }

  .hero h1 {
    max-width: 720px;
    font-size: clamp(58px, 6.2vw, 98px);
  }

  .hero-stage {
    right: clamp(-80px, -3vw, -30px);
    width: min(60vw, 945px);
  }

  .scroll-cue {
    left: clamp(22px, 5vw, 82px);
  }
}

@media (min-width: 1680px) {
  .hero-copy {
    padding-left: clamp(82px, calc(28vw - 388.4px), 220px);
  }

  .hero h1 {
    font-size: clamp(88px, calc(143.65px - 2.717vw), 98px);
  }

  .hero-stage {
    right: clamp(-50px, calc(60vw - 1058px), 220px);
  }

  .scroll-cue {
    left: clamp(82px, calc(28vw - 388.4px), 220px);
  }
}

@media (max-width: 1100px) {
  .hero-copy {
    width: min(52vw, 580px);
  }

  .hero h1 {
    font-size: clamp(48px, 6.4vw, 70px);
  }

  .hero-stage {
    right: -16%;
    width: 72vw;
  }

  .experience-stage {
    grid-template-columns: minmax(0, 0.52fr) minmax(370px, 0.48fr);
    gap: 56px;
  }

  .visual-frame {
    min-height: 590px;
  }

  .download-shell {
    grid-template-columns: 1fr;
  }

  .download-main {
    max-width: 920px;
  }

  .install-guide {
    max-width: 760px;
  }
}

@media (max-width: 820px) {
  :root {
    --header: 68px;
  }

  .site-header {
    padding: 0 20px;
  }

  .brand img {
    width: 38px;
    height: 38px;
    border-radius: 10px;
  }

  .site-nav a {
    display: none;
  }

  .hero {
    min-height: 1040px;
  }

  .hero-copy {
    width: 100%;
    padding: 126px 22px 0;
  }

  .hero h1 {
    max-width: 680px;
    font-size: clamp(42px, 11.8vw, 88px);
  }

  .hero-lead {
    max-width: 540px;
  }

  .hero-stage {
    top: 63%;
    right: -18%;
    width: 115vw;
    max-width: 890px;
    transform: translateY(-5%);
  }

  .scroll-cue {
    display: none;
  }

  .section-intro,
  .experience-stage {
    grid-template-columns: 1fr;
  }

  .section-intro {
    gap: 32px;
  }

  .section-intro .eyebrow {
    margin-bottom: 12px;
  }

  .experience-visual {
    display: none;
  }

  .visual-frame {
    min-height: min(92vw, 680px);
  }

  .experience {
    padding-bottom: 0;
  }

  .experience-stage {
    display: block;
  }

  .feature-list {
    --mobile-device-width: 100%;
    --mobile-device-offset: -5%;
    position: sticky;
    top: var(--header);
    height: var(--mobile-stage-height, calc(100dvh - var(--header)));
    overflow: hidden;
    border-top: 0;
  }

  .feature-item {
    position: absolute;
    inset: 0;
    z-index: 0;
    min-height: 0;
    align-content: start;
    padding: 28px 38px 34px 0;
    opacity: 0;
    background: var(--paper);
    pointer-events: none;
    transform: none !important;
    transition: opacity 380ms ease;
  }

  .feature-item.is-active {
    z-index: 2;
    opacity: 1;
    pointer-events: auto;
    transform: none !important;
  }

  .feature-story {
    position: relative;
    display: block;
    height: 500svh;
  }

  .feature-progress {
    position: absolute;
    z-index: 6;
    top: var(--feature-progress-top, 38%);
    right: 0;
    display: flex;
    align-items: center;
    flex-direction: column;
    width: 18px;
    height: var(--feature-progress-height, 300px);
    gap: 0;
    color: rgba(255, 250, 241, 0.48);
    transform: none;
  }

  .feature-progress-count {
    position: absolute;
    right: 0;
    bottom: calc(100% + 12px);
    font-family: var(--mono);
    font-size: 9px;
    font-weight: 720;
    letter-spacing: 0.06em;
    white-space: nowrap;
  }

  .feature-progress-dots {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: space-between;
    width: 18px;
    height: 100%;
    gap: 0;
  }

  .feature-progress-dots button {
    width: 18px;
    height: 18px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .feature-progress-dots button::before {
    content: "";
    display: block;
    width: 5px;
    height: 5px;
    margin: auto;
    border-radius: 50%;
    background: rgba(255, 250, 241, 0.28);
    transition: background 220ms ease, box-shadow 220ms ease, transform 220ms ease;
  }

  .feature-progress-dots button.is-active::before {
    background: var(--blue);
    box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.15);
    transform: scale(1.2);
  }

  .feature-progress-dots button:focus-visible {
    outline: 1px solid var(--blue);
    outline-offset: 2px;
  }

  .feature-progress-hint {
    position: absolute;
    top: calc(100% + 14px);
    right: 4px;
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    writing-mode: vertical-rl;
  }

  .feature-inline-visual {
    position: relative;
    display: block;
    width: 100%;
    margin-top: 30px;
    isolation: isolate;
    transition: transform 480ms cubic-bezier(.2,.8,.2,1);
  }

  .feature-item.is-before .feature-inline-visual {
    transform: translateY(-38px);
  }

  .feature-item.is-after .feature-inline-visual {
    transform: translateY(38px);
  }

  .feature-item.is-active .feature-inline-visual {
    transform: translateY(0);
  }

  .feature-item[data-scene="fold-base"] .feature-inline-visual,
  .feature-item[data-scene="grip"] .feature-inline-visual {
    transform: none;
  }

  .feature-inline-visual svg {
    position: absolute;
    z-index: 0;
    inset: -6% auto -8% -6%;
    width: 112%;
    height: 116%;
    color: rgba(255, 106, 26, 0.58);
    stroke: currentColor;
    stroke-width: 1.3;
    stroke-dasharray: 720;
    stroke-dashoffset: 720;
    animation: mobileLineDraw 1.4s ease forwards;
    pointer-events: none;
  }

  .feature-inline-image {
    display: block;
    position: relative;
    z-index: 1;
    width: var(--mobile-device-width);
    max-width: var(--mobile-device-width);
    margin: 0 0 0 var(--mobile-device-offset);
    padding: 0;
    background: transparent;
    object-fit: contain;
    filter: drop-shadow(0 24px 30px rgba(0, 0, 0, 0.42));
    transform: translateY(14px);
  }

  .grip-visual {
    overflow: visible;
  }

  .grip-composite-mobile {
    position: relative;
    top: var(--grip-align-y, 0px);
    left: var(--grip-align-x, 0px);
    width: var(--mobile-device-width);
    max-width: var(--mobile-device-width);
    margin-left: var(--mobile-device-offset);
    opacity: 1;
    transform: translateY(14px);
  }

  .grip-composite-mobile .grip-device {
    filter: none;
  }

  .grip-composite-mobile .grip-device-base {
    filter: drop-shadow(0 24px 30px rgba(0, 0, 0, 0.42));
  }

  .grip-composite-mobile .grip-hand-anchor img {
    filter: drop-shadow(0 14px 16px rgba(0, 0, 0, 0.18));
  }

  .feature-button-cloud {
    height: min(72vw, 300px);
  }

  .feature-button-cloud .control-piece {
    filter: drop-shadow(0 16px 18px rgba(0, 0, 0, 0.46));
  }

  @keyframes mobileLineDraw {
    to { stroke-dashoffset: 0; }
  }

  .download-art {
    right: -22%;
    width: 116vw;
    opacity: 0.3;
  }

  .other-projects {
    margin-top: 92px;
  }

  .project-list {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .project-link + .project-link {
    border-top: 0;
  }

  .site-footer {
    flex-direction: column;
  }

  .developer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .feature-list {
    --mobile-device-offset: -10%;
  }

  .brand {
    gap: 9px;
    font-size: 12px;
  }

  .nav-download {
    min-height: 38px;
    padding: 0 14px;
    font-size: 12px;
  }

  .hero {
    min-height: 960px;
  }

  .hero-copy {
    padding-top: 112px;
  }

  .eyebrow {
    margin-bottom: 18px;
    font-size: 10px;
  }

  .hero h1 {
    font-size: clamp(38px, 11.5vw, 64px);
    line-height: 0.96;
  }

  .hero-lead {
    margin-top: 22px;
    font-size: 16px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    margin-top: 28px;
  }

  .button {
    min-height: 50px;
  }

  .hero-stage {
    top: 65%;
    right: -28%;
    width: 138vw;
  }

  .hero-signal-b,
  .hero-cross-b {
    display: none;
  }

  .hero-glyph {
    top: 5%;
    left: 4%;
  }

  .hero-wordmark {
    bottom: 0;
    font-size: 34vw;
  }

  .experience {
    padding-top: 90px;
  }

  .section-intro {
    margin-bottom: 20px;
  }

  .section-intro h2,
  .download-main h2 {
    font-size: clamp(46px, 13vw, 68px);
  }

  .download-main h2 span {
    white-space: nowrap;
  }

  .download-main h2 {
    font-size: clamp(36px, 11.2vw, 58px);
  }

  .experience-stage {
    gap: 0;
  }

  .feature-item {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
    padding: 20px 34px 26px 0;
  }

  .feature-item h3 {
    font-size: 34px;
  }

  .feature-item > div:last-child > p:not(.feature-tag) {
    margin-top: 13px;
    font-size: 15px;
  }

  .feature-inline-visual {
    margin-top: 28px;
  }

  .feature-inline-visual svg {
    inset: -4% auto -12% -12%;
    width: 124%;
    height: 120%;
  }

  .feature-inline-image {
    transform: translateY(24px);
  }

  .grip-composite-mobile {
    transform: translateY(24px);
  }

  .visual-label {
    font-size: 9px;
  }

  .visual-frame {
    min-height: 104vw;
  }

  .visual-frame > [data-experience-image] {
    width: 108%;
  }

  .download {
    padding-top: 92px;
  }

  .download-main .button-light {
    margin-top: 40px;
  }

  .resource-downloads {
    grid-template-columns: 1fr;
  }

  .other-projects-head {
    align-items: start;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
  }

  .other-projects-head h3 {
    font-size: 36px;
  }

  .other-projects-title {
    width: 100%;
  }

  .other-projects-description {
    margin-top: 12px;
    font-size: 14px;
  }

  .project-link {
    grid-template-columns: 22px 64px minmax(0, 1fr) auto;
    gap: 12px;
    padding: 22px 0;
  }

  .project-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
  }

  .project-copy strong {
    margin-bottom: 6px;
    font-size: 21px;
  }

  .project-copy small {
    font-size: 12px;
  }

  .project-arrow {
    font-size: 20px;
  }

  .developer-links > span {
    width: 100%;
  }

  .download-dialog {
    padding: 34px 24px;
  }

  .dialog-actions {
    flex-direction: column;
  }

  .dialog-actions .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}