:root {
  --bg: #000000;
  --bg-rgb: 0, 0, 0;
  --fg: #ffffff;
  --muted: rgba(255,255,255,.62);
  --dim: rgba(255,255,255,.5);
  --line: rgba(255,255,255,.2);
  --line-strong: rgba(255,255,255,.28);
  --fg-rgb: 255, 255, 255;

  --geo: rgba(255,255,255,.28);

  --surface-veil: rgba(20,20,20,.86);
  --surface-1: rgba(255,255,255,.035);
  --surface-2: rgba(255,255,255,.055);
  --surface-hi: rgba(255,255,255,.45);
  --surface-hover: rgba(255,255,255,.06);
  --dot: rgba(255,255,255,.085);
  --stripe: rgba(255,255,255,.05);
  --lift: rgba(255,255,255,.05);
  --veil-bright: 1.0;

  --stack-hold: 60vh;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Source Han Serif SC", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  --cursor-size: clamp(180px, 22vw, 280px);
}
html[data-theme="light"] {
  --bg: #ffffff;
  --bg-rgb: 255, 255, 255;
  --fg: #000000;
  --fg-rgb: 0, 0, 0;
  --geo: rgba(0,0,0,.24);
  --muted: rgba(0,0,0,.64);
  --dim: rgba(0,0,0,.58);
  --line: rgba(0,0,0,.18);
  --line-strong: rgba(0,0,0,.26);


  --surface-veil: rgba(247,247,249,.92);
  --surface-1: rgba(0,0,0,.022);
  --surface-2: rgba(0,0,0,.05);
  --surface-hi: rgba(0,0,0,.07);
  --surface-hover: rgba(0,0,0,.035);
  --dot: rgba(0,0,0,.10);
  --stripe: rgba(0,0,0,.055);
  --lift: rgba(0,0,0,.06);
  --veil-bright: 1.04;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body {
  min-height: 100vh;
  font-family: var(--sans);
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  isolation: isolate;
  transition: opacity .45s ease;
}
html.switching body { opacity: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--fg); color: var(--bg); }
a:focus-visible,
button:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 4px;
  border-radius: 2px;
}
html { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.26) transparent; }
html[data-theme="light"] { scrollbar-color: rgba(0,0,0,.26) transparent; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,.2); border-radius: 9px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.42); }
html[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0,0,0,.2); }
html[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.42); }
.bg-geometry {
  position: fixed;
  inset: 0;
  z-index: -1;
  display: grid;
  place-items: center;
  pointer-events: none;
  color: var(--geo);
  background: var(--bg);
}
.bg-geometry svg {
  width: min(130vmin, 1200px);
  height: min(130vmin, 1200px);
}
.bg-geometry .wire {
  transform-origin: 50% 50%;
}
.bg-geometry .ring {
  transform-origin: 600px 600px;
  will-change: transform;
}
.bg-geometry .ring-a { animation: geo-spin 120s linear infinite; }
.bg-geometry .ring-b { animation: geo-spin-rev 76s linear infinite; }
.bg-geometry .ring-c { animation: geo-spin-rev 96s linear infinite; }
.bg-geometry .ring-d {
  animation: geo-spin-tilt 140s linear infinite;
}
.bg-geometry circle,
.bg-geometry ellipse {
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.bg-geometry .dot {
  fill: currentColor;
  stroke: none;
  animation: geo-pulse 4.5s ease-in-out infinite;
  transform-origin: 600px 600px;
}
@keyframes geo-spin      { from { transform: rotate(0deg);   }
to { transform: rotate(360deg);  }
}
@keyframes geo-spin-rev  { from { transform: rotate(360deg); }
to { transform: rotate(0deg);    }
}
@keyframes geo-spin-tilt { from { transform: rotate(45deg);  }
to { transform: rotate(405deg); }
}
@keyframes geo-pulse {
  0%, 100% { opacity: .45; transform: scale(1);   }
50%      { opacity: 1;   transform: scale(1.6); }
}
.cursor-invert {
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: var(--cursor-size);
  height: var(--cursor-size);
  margin: calc(var(--cursor-size) / -2) 0 0 calc(var(--cursor-size) / -2);
  border-radius: 50%;
  background: #fff;
  mix-blend-mode: difference;
  pointer-events: none;
  opacity: 0;
  will-change: transform;
  transition: opacity .2s ease;
}
.cursor-invert.is-active { opacity: 1; }
@media (hover: none) {
  .cursor-invert { display: none; }
}
.progress {
  position: fixed;
  z-index: 90;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: none;
  pointer-events: none;
  mix-blend-mode: difference;
}
.progress::before,
.progress-bar {
  content: "";
  position: absolute;
  inset: 0;
  -webkit-mask-image: repeating-linear-gradient(90deg, #000 0 calc(25% - 3px), transparent calc(25% - 3px) 25%);
  mask-image: repeating-linear-gradient(90deg, #000 0 calc(25% - 3px), transparent calc(25% - 3px) 25%);
}
.progress::before { background: rgba(255,255,255,.22); }
.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: #fff;
}
.shell {
  width: min(1240px, calc(100% - 12vw));
  margin: 0 auto;
}
.eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--dim);
}
.eyebrow-center { text-align: center; }
.section-title {
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .02em;
}
.mobile-break { display: none; }
.section-sub {
  max-width: 620px;
  margin-top: 22px;
  font-size: 15px;
  color: var(--muted);
}
.section {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  display: grid;
  align-content: center;
  padding: 16vh 0;
}
.section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-color: var(--surface-veil);
  backdrop-filter: blur(8px) brightness(var(--veil-bright));
  -webkit-backdrop-filter: blur(8px) brightness(var(--veil-bright));

  box-shadow: 0 -34px 74px var(--lift);
}
.stack-hold { height: var(--stack-hold); }
:root {

  --edge: max(6vw, calc(50% - 620px));

  --rim: var(--surface-hi);

  --panel-base: var(--bg);

  --tag-num: var(--fg);
  --cover: 0;
}
.page-tag {
  position: absolute;
  top: clamp(24px, 4.2vh, 44px);
  left: var(--edge);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: none;
  font-size: 10px;
  letter-spacing: .34em;
  text-indent: .34em;
  color: var(--dim);
}
.page-tag i {
  font-family: var(--serif);
  font-size: 17px;
  font-style: normal;
  font-weight: 700;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  text-indent: 0;
  color: var(--tag-num);
}
.page-tag s {
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: .42;
  transform-origin: left center;
  transition: transform .85s cubic-bezier(.22,1,.36,1), opacity .6s ease;
}
.page-tag b { font-weight: 500; }
.page-tag { opacity: .58; transition: opacity .7s ease; }
.is-active > .page-tag { opacity: 1; }
.is-active > .page-tag s { transform: scaleX(2.2); opacity: .9; }
.page-rim {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  z-index: 3;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--rim) 14%, var(--rim) 86%, transparent);
}
.section::after,
.hero::after,
.about::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 4;
  background: var(--panel-base);
  opacity: var(--cover);
  pointer-events: none;
}
.section > .shell,
.about > .shell {
  transform: scale(calc(1 - var(--cover) * .035));
  transform-origin: 50% 0;
}
.hero {
  transform: scale(calc(1 - var(--cover) * .035));
  transform-origin: 50% 0;
}
#android::before {
  background-image: radial-gradient(circle at center, var(--dot) 1px, transparent 1.5px);
  background-size: 26px 26px;
}
.download::before {
  background-image: radial-gradient(circle at center, var(--dot) 1px, transparent 1.5px);
  background-size: 26px 26px;
}
.page-rail {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 92;
  display: flex;
  flex-direction: column;
  gap: 15px;
  mix-blend-mode: difference;
}
.page-rail a {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  font-size: 10px;
  letter-spacing: .26em;
  color: #fff;
  opacity: .32;
  transition: opacity .4s ease;
}
.page-rail a i { font-style: normal; font-variant-numeric: tabular-nums; }
.page-rail a span { position: relative; }
.page-rail a span::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .55s cubic-bezier(.22,1,.36,1);
}
.page-rail a:hover { opacity: .78; }
.page-rail a.is-active { opacity: 1; }
.page-rail a.is-active span::after { transform: scaleX(1); }
#android { z-index: 2; }
#android::before {
  border-radius: 30px 30px 0 0;
}
.hero {
  position: sticky;
  top: 0;
  z-index: 1;
  isolation: isolate;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 120px 6vw 80px;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at center, currentColor 1.2px, transparent 1.8px);
  background-size: 26px 26px;
  color: var(--fg);
  opacity: .22;
  -webkit-mask-image: radial-gradient(ellipse 66% 60% at 50% 50%, transparent 0%, #000 82%);
  mask-image: radial-gradient(ellipse 66% 60% at 50% 50%, transparent 0%, #000 82%);
}
.hero-brand {
  font-family: var(--sans);
  font-size: clamp(64px, 12vw, 170px);
  font-weight: 700;
  line-height: .94;
  letter-spacing: -.05em;
}
.hero-line {
  width: min(100%, 640px);
  height: 1px;
  margin: 42px 0 28px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.hero-copy {
  max-width: 640px;
  font-family: var(--serif);
  font-size: clamp(16px, 1.6vw, 22px);
  letter-spacing: .34em;
  text-indent: .34em;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 46px;
}
.hero-cta,
.quiet-link {
  margin-top: 0;
}
.scroll-hint {
  position: absolute;
  bottom: 44px;
  left: 50%;
  width: 1px;
  height: 60px;
  overflow: hidden;
  transform: translateX(-50%);
}
.scroll-hint::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 100%;
  background: var(--fg);
  animation: hint-drop 2.2s cubic-bezier(.65,0,.35,1) infinite;
}
@keyframes hint-drop {
  0% { transform: translateY(-100%); opacity: 0; }
40% { transform: translateY(0); opacity: 1; }
100% { transform: translateY(100%); opacity: 0; }
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 7vw, 90px);
  align-items: center;
}
.split--reverse .product-copy { order: 2; }
.split--reverse .media { order: 1; }
.product-copy { max-width: 560px; }
.product-copy h2 { margin-top: 22px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px 40px;
  margin-top: 44px;
}
.feature-grid h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .06em;
}
.feature-grid p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.tag {
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  transition: border-color .4s ease, color .4s ease;
}
.tag:hover { border-color: var(--fg); color: var(--fg); }
.product-note {
  margin-top: 42px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--dim);
}
.media { display: flex; justify-content: center; }
.phone-strip { display: flex; align-items: center; gap: clamp(10px, 1.4vw, 20px); }
.phone-frame {
  width: clamp(140px, 17vw, 220px);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: var(--bg);
}
.phone-frame:nth-child(2) { transform: translateY(-18px); }
.phone-frame img { width: 100%; height: auto; }
.phone-frame { transition: border-color .45s ease, box-shadow .45s ease; }
.phone-frame:hover { border-color: var(--fg); box-shadow: 0 0 0 1px var(--fg); }
.download {
  z-index: 4;
  text-align: center;
}
.download::before {
  background-color: var(--surface-veil);
  border-radius: 30px 30px 0 0;
  box-shadow: 0 -34px 74px var(--lift);
  backdrop-filter: blur(8px) brightness(var(--veil-bright));
  -webkit-backdrop-filter: blur(8px) brightness(var(--veil-bright));
}
.download .section-title { margin-top: 18px; }
.dl-grid {
  display: grid;
  grid-template-columns: minmax(0, 760px);
  gap: 20px;
  justify-content: center;
  margin: 56px auto 0;
}
.dl-card {
  padding: 42px;
  border: 1px solid var(--line-strong);
  background: var(--surface-1);
  text-align: left;
  transition: border-color .45s ease, background-color .45s ease, transform .5s cubic-bezier(.22,1,.36,1);
}
.dl-card:hover { transform: translateY(-4px); border-color: var(--fg); background: var(--surface-hover); }
.dl-card--android {
  border-color: var(--fg);
  background: var(--surface-2);
  box-shadow: inset 0 1px 0 var(--surface-hi);
}
.dl-card--beta {
  padding: 30px 32px;
  border-color: var(--fg);
  background: var(--surface-2);
  box-shadow: inset 0 1px 0 var(--surface-hi);
}
.dl-card--beta h3 {
  margin-top: 18px;
  font-size: clamp(22px, 2.2vw, 28px);
}
.dl-ver-em {
  font-style: normal;
  font-size: .6em;
  letter-spacing: .1em;
  margin-left: .45em;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  vertical-align: middle;
}
.dl-badge {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .22em;
}
.dl-badge--stable {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line-strong);
}
.dl-ver-em--stable {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line-strong);
}
.dl-card--beta .dl-desc { min-height: 0; margin-top: 14px; }
.dl-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--dim);
}
.dl-head svg { width: 20px; height: 20px; }
.dl-card h3 {
  margin-top: 24px;
  font-family: var(--serif);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
}
.dl-ver { margin-top: 10px; font-size: 12px; color: var(--dim); }
.dl-desc { margin-top: 18px; font-size: 13px; line-height: 1.8; color: var(--muted); min-height: 54px; }
.btn {
  --btn-h: 50px;
  --btn-px: 34px;
  --btn-fs: 13px;
  --btn-ls: .18em;
  --btn-min: 0px;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--btn-min);
  min-height: var(--btn-h);
  margin-top: 30px;
  padding: 0 var(--btn-px);
  border: 1px solid var(--fg);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: var(--btn-fs);
  line-height: 1;
  letter-spacing: var(--btn-ls);
  text-align: center;
  transition: background .3s ease, color .3s ease,
              border-color .3s ease, transform .3s ease;
}
.btn--lg { --btn-h: 56px; --btn-px: 38px; --btn-fs: 14px; --btn-min: 230px; }
.btn--sm {
  --btn-h: 28px;
  --btn-px: 16px;
  --btn-fs: 10px;
  --btn-ls: .1em;
  --btn-min: 0px;
  margin-top: 20px;
}
.btn--solid { background: var(--fg); color: var(--bg); }
.btn--solid:hover { opacity: .82; transform: translateY(-2px); }
.btn--ghost { border-color: var(--line-strong); color: var(--muted); }
.btn--ghost:hover {
  border-color: var(--fg);
  color: var(--fg);
  background: color-mix(in srgb, currentColor 8%, transparent);
  transform: translateY(-2px);
}
.dl-sublinks { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 22px; }
a.dl-broken {
  opacity: .45;
  cursor: not-allowed;
  pointer-events: none;
  text-decoration: line-through;
}
.dl-alt {
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  transition: color .3s ease, border-color .3s ease;
}
.dl-alt:hover { color: var(--fg); border-color: var(--fg); }
.dl-alt--dim { color: var(--dim); cursor: default; }
.about {
  position: relative;
  z-index: 5;
  min-height: 100vh;
  min-height: 100svh;
  padding: 100px 0 46px;
  background-color: var(--surface-veil);
  background-image: repeating-linear-gradient(90deg, var(--stripe) 0 1px, transparent 1px 84px);
  backdrop-filter: blur(8px) brightness(var(--veil-bright));
  -webkit-backdrop-filter: blur(8px) brightness(var(--veil-bright));
  border-radius: 30px 30px 0 0;
  box-shadow: 0 -34px 74px var(--lift);
  border-top: 1px solid var(--line);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(4, minmax(0, 1fr));
  gap: 44px;
}
.about-logo { font-family: var(--serif); font-size: 38px; font-weight: 900; }
.about-slogan { margin-top: 16px; font-family: var(--serif); font-size: 14px; letter-spacing: .38em; color: var(--muted); }
.about-slogan-en { margin-top: 8px; font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.about-col h4 { margin-bottom: 18px; font-size: 11px; font-weight: 500; letter-spacing: .28em; color: var(--dim); }
.about-col a { display: block; margin-bottom: 10px; font-size: 13px; color: var(--muted); transition: color .3s ease; }
.about-col a:hover { color: var(--fg); }
.about-intro { max-width: 980px; margin: 70px auto 0; padding-top: 30px; border-top: 1px solid var(--line); }
.about-intro p, .disclaimer p { font-size: 12px; line-height: 2; color: var(--dim); }
.disclaimer { max-width: 980px; margin: 34px auto 0; }
.disclaimer h4 { margin-bottom: 10px; font-size: 11px; letter-spacing: .28em; color: var(--dim); }
.about-bottom {
  max-width: 980px;
  margin: auto auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 11px;
  color: var(--dim);
}
.sig-loader {
  position: fixed;
  z-index: 10000;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--fg);
  pointer-events: none;
  transition: opacity .5s ease, visibility 0s linear .5s;
}
.sig-loader.done { opacity: 0; visibility: hidden; }
.sig-svg { width: clamp(280px, 38vw, 520px); height: auto; overflow: visible; }
.sig-text {
  font-family: "Quiddity Script", "Segoe Script", "Brush Script MT", cursive;
  font-size: 96px;
  fill: currentColor;
  clip-path: inset(0 100% 0 0);
  animation: sig-reveal 1.15s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes sig-reveal {
  to { clip-path: inset(0 0 0 0); }
}
html.no-scroll { overflow: hidden !important; height: 100vh !important; }
.reveal, .reveal-scale { opacity: 0; transform: translateY(30px); transition: opacity .85s cubic-bezier(.22,1,.36,1), transform .85s cubic-bezier(.22,1,.36,1); }
.reveal-scale { transform: translateY(18px) scale(.98); }
.reveal.in, .reveal-scale.in { opacity: 1; transform: none; }
.d1 { transition-delay: .08s; }
.d2 { transition-delay: .16s; }
.d3 { transition-delay: .24s; }
.d4 { transition-delay: .32s; }
.switcher {
  position: fixed;
  z-index: 95;
  top: 16px; right: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  mix-blend-mode: difference;
}
.sw-btn {
  height: 30px;
  min-width: 30px;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 999px;
  background: transparent;
  color: #fff;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .12em;
  cursor: pointer;
  transition: transform .3s ease, border-color .3s ease;
}
.sw-btn:hover { transform: translateY(-1px); border-color: #fff; }
.sw-theme { padding: 0; width: 30px; }
.sw-theme svg { display: block; width: 14px; height: 14px; }
@media (max-width: 940px) {
  :root { --stack-hold: 55vh; --edge: 24px; }
.page-rail { right: 12px; gap: 11px; }
.page-rail a span { display: none; }
.page-tag { top: 18px; }
.shell { width: calc(100% - 48px); }
.split { grid-template-columns: 1fr; gap: 40px; }
.feature-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 30px; }
.dl-grid { grid-template-columns: 1fr; gap: 16px; }
.dl-card { padding: 28px; }
.about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.about { padding-top: 72px; }
}
@media (max-width: 640px) {

  a, button { -webkit-tap-highlight-color: transparent; }
.hero { padding: 14vh 18px 10vh; }
.page-rail { display: none; }
.shell { width: calc(100% - 36px); }
.section .shell {
    overscroll-behavior-y: auto;
    padding: 9vh 0 calc(9vh + env(safe-area-inset-bottom));
  }
.section-title {
    font-size: clamp(30px, 8.5vw, 38px);
    line-height: 1.24;
    letter-spacing: .02em;
  }
.section-sub { margin-top: 14px; font-size: 13px; line-height: 1.75; }
.product-copy { max-width: none; }
.feature-grid { gap: 18px; margin-top: 26px; }
.feature-grid h3 { font-size: 14px; }
.feature-grid p { font-size: 12.5px; line-height: 1.7; }
.tag-row { gap: 7px; margin-top: 20px; }
.tag { padding: 6px 12px; }
.product-note { margin-top: 28px; }
.download .shell { padding: 56px 0 32px; }
.download .shell { padding: 0; }
.dl-card { padding: 24px 20px; }
.dl-alt { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 0; }
.about-grid { gap: 28px; }
.about-col h4 { margin-bottom: 10px; }
.about-col a { margin-bottom: 0; padding: 8px 0; line-height: 1.45; }
.about-intro { margin-top: 48px; padding-top: 24px; }
.about-intro p, .disclaimer p { line-height: 1.85; }
.about-bottom { margin-top: 42px; padding-top: 20px; }
.switcher {
    top: calc(10px + env(safe-area-inset-top));
    right: 12px;
    gap: 8px;
  }
.sw-btn { height: 36px; min-width: 36px; padding: 0 11px; }
.sw-theme { width: 36px; }
}
@media (max-width: 520px) {
  .mobile-break { display: block; }
.hero-brand { font-size: clamp(52px, 16vw, 62px); }
.hero-line { margin: 32px 0 20px; }
.hero-copy { font-size: 15px; letter-spacing: .24em; text-indent: .24em; }
.hero-actions { flex-direction: column; width: 100%; gap: 12px; margin-top: 34px; }
.hero-cta, .quiet-link { width: 100%; --btn-h: 52px; --btn-px: 24px; }
.scroll-hint { bottom: 26px; height: 48px; }
.phone-strip { gap: 6px; }
.phone-frame { width: calc((100% - 12px) / 3); min-width: 0; border-radius: 14px; }
.phone-frame:nth-child(2) { transform: translateY(-8px); }
.about { padding: 72px 0 calc(32px + env(safe-area-inset-bottom)); }
.about-logo { font-size: 34px; }
.about-grid { grid-template-columns: 1fr; gap: 28px; }
.about-bottom { gap: 8px; }
}
@media (hover: none) {
  .tag:hover,
  .phone-frame:hover,
  .dl-card:hover,
  .btn--solid:hover,
  .btn--ghost:hover,
  .dl-alt:hover,
  .about-col a:hover,
  .sw-btn:hover,
  .page-rail a:hover {
    transform: none;
    opacity: 1;
  }
.dl-card:hover { background: var(--surface-1); }
.dl-card--android:hover { background: var(--surface-2); }
.dl-card--beta:hover { background: var(--surface-2); }
.btn--solid:hover { background: var(--fg); opacity: 1; }
.btn--ghost:hover { background: transparent; border-color: var(--line-strong); color: var(--muted); }
.sw-btn:hover { transform: none; border-color: rgba(255,255,255,.55); }
.page-rail a:hover { opacity: .32; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
body, .btn { transition: none; }
.bg-geometry .ring, .bg-geometry .dot, .scroll-hint::after { animation: none; }
.bg-geometry .ring-d { transform: rotate(45deg); }
.sig-text { clip-path: inset(0 0 0 0); animation: none; }
.reveal, .reveal-scale { opacity: 1; transform: none; transition: none; }
.section > .shell, .about > .shell, .hero { transform: none; }
.page-tag s { transition: none; }
}

@media (pointer: coarse) {
    .section {
    position: relative;
    height: auto;
    min-height: 100svh;
    overflow: visible;
    padding: 12vh 0;
  }
  .section .shell { overflow: visible; padding: 0; }
  .hero {
    position: static;
    height: auto;
    min-height: 100svh;
    overflow: visible;
    padding: 14vh 18px 10vh;
  }
  .stack-hold { height: 4vh; }
  .download .shell { padding: 0; }
  .section::after,
  .hero::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 56px;
    height: 1px;
    transform: translateX(-50%);
    background: var(--line-strong);
  }
}