:root {
  color-scheme: light;
  --paper: #ffffff;
  --surface: #f5f6f8;
  --ink: #1c1c1e;
  --muted: #5c626b;
  --teal: #087f8c;
  --teal-dark: #066b76;
  --tint: #e8f5f5;
  --line: #e3e7e9;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font-size: 16px; line-height: 1.65; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; }
img, svg, video { display: block; max-width: 100%; }
figure, p, h1, h2, h3 { margin: 0; }
[hidden] { display: none !important; }
::selection { color: var(--ink); background: #c7e7e9; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }

.container { width: min(100% - 48px, 1120px); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 10px; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: relative; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; min-height: 44px; align-items: center; gap: 12px; font-size: 20px; font-weight: 760; line-height: 1; letter-spacing: -.035em; text-decoration: none; white-space: nowrap; }
.brand-mark { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 11px; color: #fff; background: var(--teal); }
.brand-mark svg { width: 25px; height: 25px; }
.brand-zh { font-weight: 680; }
.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; color: var(--muted); font-weight: 600; text-decoration: none; transition: color .2s ease, background .2s ease; }
.site-nav a:hover { color: var(--teal); }
.site-nav .nav-download { padding: 0 20px; border-radius: 100px; color: var(--teal); background: var(--tint); }
.site-nav .nav-download:hover { background: #d8eeee; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); align-items: center; gap: clamp(38px, 6vw, 95px); padding-top: clamp(72px, 8vw, 124px); padding-bottom: clamp(90px, 10vw, 146px); }
.hero-copy { min-width: 0; }
.eyebrow, .section-label, .panel-kicker { color: var(--teal); font-size: 16px; font-weight: 750; letter-spacing: .045em; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 25px; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }
.version { font-variant-numeric: tabular-nums; }
.hero h1 { font-size: clamp(58px, 6.3vw, 86px); font-weight: 760; line-height: 1.14; letter-spacing: -.07em; }
.hero-lead { max-width: 570px; margin-top: 31px; color: var(--muted); font-size: 20px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-top: 38px; }
.button { display: inline-flex; min-height: 56px; align-items: center; justify-content: center; gap: 10px; padding: 12px 22px; border: 1px solid transparent; border-radius: 16px; font-size: 16px; font-weight: 700; line-height: 1.4; text-decoration: none; cursor: pointer; transition: background .2s ease, color .2s ease, transform .2s ease, border-color .2s ease; }
.button svg { width: 20px; height: 20px; flex: none; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--teal); }
.button-primary:hover { color: #fff; background: var(--teal-dark); }
.button-text { padding-inline: 10px; color: var(--teal); }
.button-text:hover { color: var(--teal-dark); }
.hero-note { margin-top: 17px; color: var(--muted); font-size: 16px; }
.hero-visual { display: flex; min-height: 570px; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 35px 32px 22px; border-radius: 36px; background: var(--surface); }
.hero-device { position: relative; width: min(100%, 420px); aspect-ratio: 1 / 1.08; overflow: hidden; border: 1px solid #dce1e4; border-radius: 30px; background: #fff; box-shadow: 0 24px 54px rgba(28, 42, 46, .12); }
.hero-device img { position: absolute; top: -184%; left: -40%; width: 150%; max-width: none; height: auto; }
.hero-device::before, .screen-keyboard::before { content: ""; position: absolute; z-index: 1; top: 0; right: 0; left: 0; height: 15%; background: #e8ecf2; pointer-events: none; }
.hero-focus, .screen-focus { position: absolute; z-index: 2; display: block; border: 2px solid rgba(8, 127, 140, .9); border-radius: 10px; box-shadow: 0 0 0 5px rgba(232, 245, 245, .8); pointer-events: none; opacity: .8; }
.hero-focus { top: 15%; left: 18%; width: 70%; height: 19%; }
.focus-active .hero-focus, .focus-active .screen-focus { animation: focus-callout 700ms ease-out both; }
@keyframes focus-callout { from { opacity: 0; transform: scale(1.13); } to { opacity: .8; transform: scale(1); } }
.hero-visual figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 3px; color: var(--muted); font-size: 16px; text-align: center; }
.hero-expand { display: inline-flex; min-height: 44px; align-items: center; gap: 3px; padding: 0 2px; border: 0; background: transparent; color: var(--teal); font-size: 16px; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.hero-expand:hover { color: var(--teal-dark); }

.section { padding-block: clamp(86px, 10vw, 132px); }
.section-heading { max-width: 720px; margin-bottom: 47px; }
.section-label { margin-bottom: 18px; }
h2 { font-size: clamp(36px, 4.5vw, 58px); font-weight: 750; line-height: 1.2; letter-spacing: -.055em; }
.section-heading > p:last-child { margin-top: 19px; color: var(--muted); font-size: 18px; }

.demo-section { background: var(--surface); }
.demo-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: center; gap: clamp(40px, 7vw, 100px); }
.section-intro h2 { max-width: 440px; }
.section-intro > p:not(.section-label) { max-width: 510px; margin-top: 23px; color: var(--muted); font-size: 18px; line-height: 1.85; }
.section-intro .demo-disclaimer { margin-top: 30px !important; padding-left: 16px; border-left: 2px solid var(--teal); font-size: 16px !important; line-height: 1.7 !important; }
.demo-card { padding: clamp(20px, 3.2vw, 34px); border: 1px solid var(--line); border-radius: 30px; background: #fff; box-shadow: 0 20px 55px rgba(29, 45, 47, .06); }
.demo-card-top { display: flex; min-height: 32px; align-items: center; gap: 9px; font-size: 16px; font-weight: 700; }
.demo-app-dot { width: 10px; height: 10px; flex: none; border-radius: 50%; background: var(--teal); }
.demo-example-tag { margin-left: auto; padding: 3px 10px; border-radius: 100px; color: var(--teal); background: var(--tint); font-size: 14px; }
.demo-input { display: flex; min-height: 170px; align-items: flex-start; margin-top: 26px; padding: 23px 25px; border: 1px solid #dce2e4; border-radius: 20px; background: #fff; font-size: 21px; line-height: 1.7; }
.demo-placeholder { color: #7d858c; }
.demo-output { color: var(--ink); font-weight: 610; }
.demo-script { margin-top: 15px; color: var(--muted); font-size: 16px; line-height: 1.65; }
.demo-script span { color: var(--ink); }
.demo-controls { display: grid; grid-template-columns: 45px 1fr auto; align-items: center; gap: 13px; margin-top: 29px; padding-top: 24px; border-top: 1px solid var(--line); }
.demo-wave { display: flex; width: 40px; height: 36px; align-items: center; justify-content: space-between; gap: 3px; }
.demo-wave i { display: block; width: 3px; height: 8px; border-radius: 100px; background: var(--teal); transform-origin: center; }
.demo-wave i:nth-child(2), .demo-wave i:nth-child(6) { height: 16px; }
.demo-wave i:nth-child(3), .demo-wave i:nth-child(5) { height: 23px; }
.demo-wave i:nth-child(4) { height: 31px; }
.demo-card[data-stage="recording"] .demo-wave i { animation: wave 650ms ease-in-out infinite alternate; }
.demo-card[data-stage="recording"] .demo-wave i:nth-child(2n) { animation-delay: -400ms; }
.demo-card[data-stage="recording"] .demo-wave i:nth-child(3n) { animation-delay: -200ms; }
.demo-card[data-stage="recording"] .demo-app-dot { background: #d85145; box-shadow: 0 0 0 5px rgba(216, 81, 69, .12); }
@keyframes wave { from { transform: scaleY(.4); } to { transform: scaleY(1); } }
.demo-card[data-stage="recording"] .demo-button { animation: action-pop 300ms ease-out; }
.demo-card[data-stage="done"] .demo-output { animation: result-appear 300ms ease-out; }
.speech-turnstile { margin-top: 12px; }
@keyframes action-pop { 0% { transform: scale(.97); } 65% { transform: scale(1.025); } 100% { transform: scale(1); } }
@keyframes result-appear { from { opacity: .25; transform: translateY(5px) scale(.985); } to { opacity: 1; transform: translateY(0) scale(1); } }
.demo-status { color: var(--muted); font-size: 16px; line-height: 1.45; }
.demo-button { min-width: 140px; }
.demo-button:disabled { opacity: .65; cursor: wait; transform: none; }

.features-section { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.feature { padding-top: 26px; border-top: 1px solid #cbd6d8; }
.feature-number { color: var(--teal); font-size: 16px; font-weight: 750; font-variant-numeric: tabular-nums; }
.feature h3 { margin-top: 38px; font-size: 25px; line-height: 1.35; letter-spacing: -.035em; }
.feature p { margin-top: 15px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.feature-example { display: grid; gap: 14px; margin-top: 24px; padding: 21px 19px; border-radius: 20px; background: #f1f7f5; }
.feature-example-row { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 10px; align-items: baseline; }
.feature-example-row span { color: var(--teal); font-size: 14px; font-weight: 700; white-space: nowrap; }
.feature-example-row strong { color: var(--ink); font-size: 17px; font-weight: 650; line-height: 1.55; overflow-wrap: anywhere; }
.feature p.feature-note { margin-top: 16px; font-size: 14px; line-height: 1.65; }

.screens-section { background: var(--surface); }
.swipe-hint { display: none; color: var(--muted); font-size: 16px; }
.screen-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(18px, 3vw, 32px); }
.screen-item { min-width: 0; }
.screen-image { position: relative; aspect-ratio: 1 / 1.1; overflow: hidden; border: 1px solid #e0e4e7; border-radius: 28px; background: #fff; box-shadow: 0 12px 36px rgba(30, 41, 48, .06); }
.screen-image img { width: 100%; height: 100%; object-fit: cover; }
.screen-home img { object-position: center top; }
.screen-keyboard img { position: absolute; top: -155%; left: -23%; width: 130%; max-width: none; height: auto; }
.screen-keyboard::before { height: 14%; }
.screen-focus { top: 14%; left: 28%; width: 60%; height: 15%; }
.screen-item figcaption { display: flex; flex-direction: column; gap: 4px; padding: 19px 3px 0; }
.screen-item figcaption strong { font-size: 20px; line-height: 1.4; }
.screen-item figcaption span { color: var(--muted); font-size: 16px; }
.screen-expand { align-self: flex-start; min-height: 44px; margin-top: 8px; padding: 0; border: 0; background: transparent; color: var(--teal); font-size: 16px; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.screen-expand:hover { color: var(--teal-dark); }
.screen-expand span { color: inherit !important; }
.screen-dialog { width: min(92vw, 560px); max-width: 560px; max-height: 94dvh; overflow-y: auto; padding: 18px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: 0 20px 80px rgba(18, 30, 34, .22); }
.screen-dialog::backdrop { background: rgba(20, 30, 34, .65); }
.screen-dialog-head { position: sticky; z-index: 1; top: -18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: -18px -18px 14px; padding: 12px 18px; border-bottom: 1px solid var(--line); background: #fff; }
.screen-dialog-head h2 { font-size: 19px; letter-spacing: -.02em; }
.screen-dialog-head button { display: grid; width: 44px; height: 44px; flex: none; place-items: center; border: 0; border-radius: 50%; color: var(--muted); background: var(--surface); cursor: pointer; }
.screen-dialog-head button:hover { color: var(--ink); background: #e8ecee; }
.screen-dialog-head button svg { width: 20px; height: 20px; }
.screen-dialog img { width: min(100%, 395px); height: auto; margin-inline: auto; border: 1px solid var(--line); border-radius: 18px; }

.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .85fr); align-items: center; gap: clamp(50px, 9vw, 130px); }
.guide-lead { max-width: 565px; margin-top: 22px; color: var(--muted); font-size: 18px; line-height: 1.85; }
.guide-steps { display: grid; gap: 0; margin: 37px 0 30px; padding: 0; list-style: none; }
.guide-steps li { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 19px 0; border-top: 1px solid var(--line); }
.guide-steps li:last-child { border-bottom: 1px solid var(--line); }
.guide-steps li > span { padding-top: 3px; color: var(--teal); font-size: 16px; font-weight: 750; font-variant-numeric: tabular-nums; }
.guide-steps strong { font-size: 19px; line-height: 1.4; }
.guide-steps p { margin-top: 5px; color: var(--muted); font-size: 16px; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; color: var(--teal); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.text-link:hover { color: var(--teal-dark); }
.guide-video-wrap { justify-self: center; text-align: center; }
.guide-video-wrap video { width: min(100%, 334px); height: auto; aspect-ratio: 9 / 16; overflow: hidden; border: 1px solid #dce2e4; border-radius: 26px; background: var(--surface); box-shadow: 0 20px 60px rgba(28, 42, 46, .1); }
.guide-video-wrap p { margin-top: 14px; color: var(--muted); font-size: 16px; }

.download-section { background: var(--tint); }
.download-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(265px, 340px); gap: clamp(40px, 7vw, 100px); align-items: center; }
.download-lead { max-width: 600px; margin-top: 22px; color: var(--ink); font-size: 19px; line-height: 1.8; }
.download-meta { max-width: 620px; margin-top: 22px; color: var(--muted); font-size: 16px; line-height: 1.75; }
.download-actions { display: flex; flex-direction: column; align-items: stretch; gap: 9px; }
.download-main { width: 100%; }
.help-link { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 7px; border: 0; background: transparent; color: var(--teal); font-size: 16px; font-weight: 700; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; cursor: pointer; }
.help-link:hover { color: var(--teal-dark); }
.help-link { margin-top: 12px; }

.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(44px, 9vw, 120px); }
.faq-layout .section-heading { margin: 0; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; display: flex; min-height: 77px; align-items: center; padding: 14px 36px 14px 0; font-size: 19px; font-weight: 680; line-height: 1.45; list-style: none; cursor: pointer; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; color: var(--teal); font-size: 27px; font-weight: 400; line-height: 1; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 34px 25px 0; color: var(--muted); font-size: 16px; line-height: 1.85; }

.site-footer { padding-block: 28px; border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 16px; }
.footer-inner span:first-child { color: var(--ink); font-weight: 750; }
.footer-inner a { display: inline-flex; min-height: 44px; align-items: center; color: var(--teal); font-weight: 650; text-decoration: none; }
.footer-inner a:hover { text-decoration: underline; }

.install-panel { position: fixed; z-index: 50; top: 18px; right: 18px; width: min(420px, calc(100vw - 36px)); max-height: calc(100dvh - 36px); overflow-y: auto; overscroll-behavior: contain; padding: 0 23px 22px; border: 1px solid #d7e2e4; border-radius: 24px; background: #fff; box-shadow: 0 22px 80px rgba(15, 35, 39, .22); }
.install-panel-head { position: sticky; z-index: 1; top: 0; display: flex; align-items: flex-start; gap: 12px; margin: 0 -23px; padding: 22px 23px 14px; border-bottom: 1px solid var(--line); background: #fff; }
.install-panel-head h2 { margin-top: 4px; font-size: 24px; letter-spacing: -.04em; line-height: 1.3; }
.panel-kicker { font-size: 15px; }
.panel-close { display: grid; width: 44px; height: 44px; flex: none; place-items: center; margin: -6px -5px 0 auto; border: 0; border-radius: 50%; color: var(--muted); background: var(--surface); cursor: pointer; }
.panel-close:hover { color: var(--ink); background: #e8ecee; }
.panel-close svg { width: 20px; height: 20px; }
.panel-note { margin-top: 18px; color: var(--muted); font-size: 16px; line-height: 1.55; }
.panel-visuals { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
.mini-visual { display: flex; min-width: 0; min-height: 142px; flex-direction: column; align-items: stretch; justify-content: space-between; padding: 12px 10px 9px; border: 1px solid #dfe6e8; border-radius: 15px; background: #fafbfb; }
.mini-visual figcaption { color: var(--muted); font-size: 14px; font-weight: 650; line-height: 1.3; text-align: center; }
.browser-visual { position: relative; height: 86px; border: 1px solid #cdd8dc; border-radius: 7px; background: #fff; }
.browser-bar { display: flex; height: 29px; align-items: center; justify-content: space-between; gap: 8px; padding: 0 8px; border-bottom: 1px solid #dde5e7; }
.browser-bar > span:first-child { width: 70%; height: 9px; border-radius: 50px; background: #edf1f2; }
.browser-dots { color: var(--teal); font-size: 22px; line-height: 1; }
.browser-menu { position: absolute; top: 32px; right: 5px; display: flex; align-items: center; gap: 5px; padding: 4px 6px; border: 1px solid #d4dfe1; border-radius: 5px; background: #fff; box-shadow: 0 4px 10px rgba(26, 44, 49, .08); color: var(--teal); font-size: 13px; white-space: nowrap; }
.browser-menu strong { color: var(--ink); font-size: 13px; }
.source-visual { position: relative; display: flex; height: 86px; flex-direction: column; justify-content: center; padding: 9px 8px; border: 1px solid #cdd8dc; border-radius: 7px; background: #fff; }
.source-app { color: var(--muted); font-size: 12px; }
.source-label { max-width: 95px; margin-top: 3px; color: var(--ink); font-size: 13px; font-weight: 650; line-height: 1.3; }
.source-switch { position: absolute; top: 39px; right: 7px; width: 31px; height: 18px; border-radius: 50px; background: var(--teal); }
.source-switch i { position: absolute; top: 3px; right: 3px; width: 12px; height: 12px; border-radius: 50%; background: #fff; }
.install-steps { display: grid; gap: 17px; margin: 21px 0 0; padding: 0; list-style: none; }
.install-steps li { display: grid; grid-template-columns: 23px 1fr; gap: 10px; }
.install-steps li > span { display: grid; width: 23px; height: 23px; place-items: center; margin-top: 2px; border-radius: 50%; color: #fff; background: var(--teal); font-size: 13px; font-weight: 700; line-height: 1; }
.install-steps p { color: var(--ink); font-size: 16px; line-height: 1.55; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { width: min(100%, 600px); justify-self: center; }
  .demo-layout { grid-template-columns: 1fr; gap: 48px; }
  .section-intro h2 { max-width: 660px; }
  .guide-layout { gap: 40px; }
  .faq-layout { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 25px; }
  .header-inner { min-height: 106px; flex-wrap: wrap; justify-content: center; gap: 0; padding-top: 14px; }
  .brand { width: 100%; justify-content: center; }
  .site-nav { width: 100%; justify-content: space-between; gap: 4px; }
  .site-nav a { min-width: 55px; min-height: 48px; font-size: 16px; }
  .site-nav .nav-download { min-height: 44px; padding: 0 13px; }
  .hero { gap: 46px; padding-top: 60px; padding-bottom: 78px; }
  .hero h1 { font-size: clamp(43px, 11vw, 56px); line-height: 1.18; }
  .hero-lead { margin-top: 23px; font-size: 18px; line-height: 1.75; }
  .hero-actions { align-items: flex-start; flex-direction: column; margin-top: 28px; gap: 10px; }
  .hero-actions .button-primary { width: 100%; }
  .hero-note { margin-top: 10px; }
  .hero-visual { min-height: 0; padding: 24px 24px 18px; border-radius: 28px; }
  .hero-device { width: 100%; border-radius: 25px; }
  .section { padding-block: 79px; }
  .section-heading { margin-bottom: 34px; }
  h2 { font-size: clamp(36px, 9vw, 46px); }
  .section-intro > p:not(.section-label) { font-size: 17px; }
  .demo-card { border-radius: 24px; }
  .demo-input { min-height: 158px; margin-top: 19px; padding: 18px; font-size: 19px; }
  .demo-controls { grid-template-columns: 40px 1fr; gap: 8px 11px; }
  .demo-button { grid-column: 1 / -1; width: 100%; margin-top: 11px; }
  .features-grid { grid-template-columns: 1fr; gap: 32px; }
  .feature { padding-top: 20px; }
  .feature h3 { margin-top: 18px; }
  .screen-gallery { display: flex; gap: 16px; width: calc(100% + 24px); overflow-x: auto; overflow-y: hidden; padding: 0 24px 15px 0; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: #b7c7ca transparent; }
  .screen-item { flex: 0 0 min(72vw, 290px); scroll-snap-align: start; }
  .screen-image { border-radius: 23px; }
  .swipe-hint { display: block; margin: -12px 0 22px; }
  .guide-layout { grid-template-columns: 1fr; gap: 44px; }
  .guide-video-wrap video { width: min(100%, 300px); }
  .download-layout { grid-template-columns: 1fr; gap: 34px; }
  .download-lead { font-size: 18px; }
  .download-actions { max-width: 420px; }
  .faq-list summary { font-size: 18px; }
  .footer-inner { flex-wrap: wrap; justify-content: space-between; }
  .footer-inner span:nth-child(2) { order: 3; width: 100%; }
  .install-panel { top: 10px; right: 10px; width: calc(100vw - 20px); max-height: calc(100dvh - 20px); padding-inline: 18px; border-radius: 20px; }
  .install-panel-head { margin-inline: -18px; padding-inline: 18px; }
  .install-panel-head h2 { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}