:root {
  --paper: #fff;
  --ink: #2a1830;
  --muted: #6b5568;
  --berry: #e23d78;
  --pressed: #c42a64;
  --active: #a31f52;
  --line: #f0dde6;
  --hero: #fff5f8;
  --lilac: #fff0f5;
  --focus: #e23d78;
  --ease: cubic-bezier(.16, 1, .3, 1);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; scrollbar-color: #e7a3bc var(--paper); }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
::selection { background: #ffd6e6; color: #4a1830; }
a { color: inherit; text-decoration: none; text-underline-offset: 5px; }
button { font: inherit; cursor: pointer; }
a, button, summary { -webkit-tap-highlight-color: #ffd6e6; touch-action: manipulation; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; border-radius: 4px; }
[hidden] { display: none !important; }
svg { flex-shrink: 0; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
.wrap { width: min(1168px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 5; padding: 10px 18px; background: var(--paper); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.masthead { background: var(--paper); border-bottom: 1px solid #f6e4eb; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 84px; }
.brand { display: inline-flex; align-items: center; min-height: 44px; gap: 10px; font-size: 21px; font-weight: 750; letter-spacing: .015em; white-space: nowrap; }
.brand img { border-radius: 12px; }
.site-header nav { display: flex; align-items: center; gap: 32px; font-size: 14px; font-weight: 600; }
.site-header nav a { min-height: 46px; display: inline-flex; align-items: center; gap: 10px; }
.nav-detail:hover { color: var(--berry); }
.header-download { padding: 0 20px; border-radius: 14px; color: #fff; background: var(--berry); transition: background .2s ease, transform .3s var(--ease); }
.header-download:hover { background: var(--pressed); transform: translateY(-1px); }
.header-download svg { width: 18px; height: 18px; }
.hero-surface { background: var(--hero); }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 24px; min-height: 684px; padding-block: 30px 48px; }
.hero-copy { padding-bottom: 10px; }
h1 { font-size: clamp(44px, 5.4vw, 76px); line-height: 1.25; letter-spacing: -.035em; font-weight: 800; }
h1 span { color: var(--berry); }
.hero-description { max-width: 34em; margin-top: 28px; color: #5c4454; font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 56px; padding: 13px 24px; border: 0; border-radius: 14px; font-size: 16px; font-weight: 600; transition: background .2s ease, transform .35s var(--ease); }
.hero-actions .button { justify-content: flex-start; min-width: 186px; min-height: 68px; padding-inline: 22px; color: #fff; }
.button svg { width: 27px; height: 27px; }
.button strong, .button small { display: block; }
.button strong { font-size: 16px; font-weight: 650; line-height: 1.5; }
.button small { margin-top: 1px; font-size: 11px; font-weight: 400; line-height: 1.6; }
.android-entry { background: #c43a6a; }
.android-entry small { color: #ffe8f1; }
.android-entry:hover { background: #a82d58; transform: translateY(-2px); }
.primary { background: var(--berry); box-shadow: 0 8px 20px #e23d781c; }
.primary small { color: #fff4ff; }
.primary:hover, .platform-download:hover { background: var(--pressed); transform: translateY(-2px); }
.button:active, .header-download:active { transform: translateY(1px); }
.primary:active, .platform-download:active, .header-download:active { background: var(--active); }
.android-entry:active { background: #8e2449; }
.hero-note { margin-top: 22px; color: var(--muted); font-size: 13px; }
.hero-visual { justify-self: end; width: min(280px, 100%); animation: arrive .85s var(--ease) both; }
.phone-hero { width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; border-radius: 28%; background: #fff; box-shadow: 0 24px 60px #e23d7833; transition: transform .7s var(--ease); }
@media (hover: hover) and (pointer: fine) { .hero-visual:hover .phone-hero { transform: translateY(-5px); } }
.experience { padding-block: 84px 88px; }
.trade { padding-block: 8px 88px; scroll-margin-top: 28px; }
.trade .feature-list article { background: var(--hero); border: 0; border-radius: 16px; padding: 28px 24px 24px; }
.section-intro { margin-bottom: 42px; }
h2 { font-size: clamp(28px, 3vw, 40px); font-weight: 750; line-height: 1.4; letter-spacing: -.025em; }
.section-intro > p { margin-top: 18px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.feature-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; }
.feature-list article { padding-top: 24px; border-top: 1px solid var(--line); }
.feature-icon { width: 32px; height: 32px; margin-bottom: 16px; color: var(--berry); }
h3 { font-size: 21px; line-height: 1.5; font-weight: 650; }
.feature-list p { margin-top: 10px; color: var(--muted); line-height: 1.85; }
.download-section { padding-block: 76px; background: var(--lilac); }
.download-copy { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 34px; }
.download-copy > p { color: var(--muted); font-size: 15px; }
.downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.platform { display: grid; grid-template-columns: 40px minmax(0, 1fr); grid-template-rows: 1fr auto; align-items: start; gap: 16px; min-width: 0; padding: 28px; border: 1px solid #f0d5e0; border-radius: 16px; background: var(--paper); scroll-margin-top: 28px; }
.platform-icon { width: 36px; height: 36px; margin-top: 2px; color: var(--berry); }
.platform h3 { font-size: 25px; font-variant-numeric: tabular-nums; }
.platform-description, .release-meta { margin-top: 4px; color: var(--muted); font-size: 14px; }
.release-meta { overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.platform-action { grid-column: 1 / -1; margin-top: 8px; }
.release-unavailable { display: flex; align-items: center; justify-content: center; min-height: 50px; padding: 12px 16px; border-radius: 12px; color: #6d5360; background: #fff4f8; font-size: 14px; }
.platform-download { width: 100%; min-height: 50px; padding: 12px 18px; color: #fff; background: var(--berry); font-size: 15px; }
.download-qr { display: grid; grid-template-columns: 112px minmax(0, 1fr); align-items: center; gap: 12px; margin-top: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: var(--hero); }
.download-qr svg { display: block; width: 100%; aspect-ratio: 1; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.download-qr figcaption { min-width: 0; line-height: 1.5; }
.download-qr strong, .download-qr span { display: block; }
.download-qr strong { font-size: 16px; }
.download-qr span { margin-top: 6px; color: var(--muted); font-size: 13px; }
.download-status { grid-column: 1 / -1; margin-top: 0; color: var(--muted); font-size: 13px; min-height: 23px; }
.retry-downloads { justify-self: start; grid-column: 1 / -1; min-height: 44px; padding: 8px 18px; border: 1px solid #e7a3bc; border-radius: 10px; color: var(--pressed); background: #fff; }
.retry-downloads:hover { background: #fff6f9; }
.retry-downloads:disabled { cursor: wait; opacity: .7; }
.downloads noscript { grid-column: 1 / -1; }
.questions { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; padding-block: 72px 80px; }
.questions h2 { font-size: 28px; }
.question-list details { border-bottom: 1px solid var(--line); }
.question-list details:first-child { border-top: 1px solid var(--line); }
summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 64px; padding: 20px 2px; font-size: 15px; font-weight: 600; list-style: none; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary svg { width: 20px; height: 20px; color: var(--berry); transition: transform .25s var(--ease); }
details[open] summary svg { transform: rotate(45deg); }
details p { padding: 0 30px 22px 2px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.site-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; border-top: 1px solid var(--line); padding-block: 28px 36px; }
.footer-brand { font-size: 18px; gap: 8px; }
.footer-brand img { border-radius: 8px; }
.site-footer p { margin-top: 7px; color: var(--muted); font-size: 12px; }
.footer-links { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; color: var(--muted); font-size: 12px; }
.footer-links a { display: flex; align-items: center; min-height: 44px; }
.footer-links a:hover { color: var(--pressed); text-decoration: underline; }
@keyframes arrive { from { transform: translateY(12px); opacity: .85; } to { transform: translateY(0); opacity: 1; } }
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .hero { grid-template-columns: 1.12fr .88fr; gap: 12px; min-height: 600px; }
  .phone-hero { height: auto; }
  .hero-description { font-size: 16px; }
  .hero-actions .button { min-width: 164px; padding-inline: 18px; gap: 12px; }
  .feature-list { gap: 32px; }
  .download-copy { align-items: flex-start; }
  .download-copy h2 { max-width: 60%; }
  .questions { gap: 40px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 48px); }
  .site-header { min-height: 78px; gap: 12px; }
  .brand { font-size: 20px; gap: 8px; }
  .brand img { width: 38px; height: 38px; }
  .site-header nav { gap: 0; }
  .nav-detail { display: none !important; }
  .site-header .header-download { min-height: 44px; padding-inline: 14px; gap: 7px; font-size: 12px; border-radius: 12px; }
  .header-download svg { width: 16px; height: 16px; }
  .hero { grid-template-columns: 1fr; gap: 14px; min-height: auto; padding-block: 40px 30px; }
  .hero-copy { padding: 0; }
  h1 { font-size: clamp(38px, 9.7vw, 56px); line-height: 1.3; }
  .hero-description { margin-top: 22px; font-size: 15px; line-height: 1.85; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 26px; }
  .hero-actions .button { width: 100%; min-width: 0; min-height: 66px; padding: 12px 16px; gap: 10px; }
  .button svg { width: 24px; height: 24px; }
  .button strong { font-size: 15px; }
  .button small { font-size: 10px; }
  .hero-note { margin-top: 18px; font-size: 12px; }
  .hero-visual { justify-self: center; width: min(340px, 100%); }
  .phone-hero { height: auto; }
  .experience { padding-block: 52px 54px; }
  .section-intro { margin-bottom: 30px; }
  .section-intro > p { margin-top: 16px; font-size: 15px; }
  .section-intro > p br { display: none; }
  .feature-list { grid-template-columns: 1fr; gap: 0; }
  .feature-list article { display: grid; grid-template-columns: 34px 1fr; column-gap: 16px; padding-block: 24px; }
  .feature-icon { grid-row: 1 / 3; width: 28px; height: 28px; margin: 3px 0 0; }
  .feature-list h3 { font-size: 19px; }
  .feature-list p { margin-top: 6px; font-size: 15px; }
  .feature-list p br { display: none; }
  .download-section { padding-block: 48px; }
  .download-copy { display: block; margin-bottom: 26px; }
  .download-copy h2 { max-width: none; }
  .download-copy > p { margin-top: 14px; }
  .download-copy > p br { display: none; }
  .downloads { grid-template-columns: 1fr; gap: 16px; }
  .platform { padding: 24px; gap: 14px; }
  .platform h3 { font-size: 24px; }
  .download-status { font-size: 12px; }
  .questions { grid-template-columns: 1fr; gap: 24px; padding-block: 52px 60px; }
  .questions h2 { font-size: 26px; }
  summary { min-height: 64px; padding-block: 20px; }
  .site-footer { display: block; padding-block: 26px; }
  .footer-brand img { width: 30px; height: 30px; }
  .footer-links { margin-top: 14px; gap: 6px 24px; }
  .footer-links span { flex-basis: 100%; font-size: 11px; }
}
@media (max-width: 360px) {
  .wrap { width: calc(100% - 36px); }
  .brand { font-size: 18px; }
  .brand img { width: 34px; height: 34px; }
  .site-header .header-download { padding-inline: 10px; }
  .hero-actions { grid-template-columns: 1fr; gap: 10px; }
  .hero-actions .button { min-height: 60px; padding-inline: 22px; }
  .hero-actions .button span { display: flex; align-items: center; justify-content: space-between; flex: 1; gap: 8px; }
  .button small { font-size: 11px; }
  .desktop-break { display: none; }
  .phone-hero { height: auto; }
  .platform { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-visual:hover .phone-hero { transform: none; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}