:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  color: #242424;
  background: #f5f5f7;
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; padding: 20px 12px; }
a { color: inherit; }
.installer {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid #e6e6ec;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgb(11 12 36 / 6%);
}
.installer-header {
  padding: 27px 18px 29px;
  text-align: center;
  background: #0b0c24;
  color: #fff;
}
.eyebrow { margin: 0 0 12px; font-size: 10px; letter-spacing: 2.6px; color: #cbcbd7; }
h1 { margin: 0; font-size: clamp(19px, 3.4vw, 30px); line-height: 1.35; font-weight: 700; }
.installer-content { padding: 38px 20px 30px; text-align: center; }
h2 { margin: 0 0 28px; font-size: clamp(27px, 4.6vw, 44px); line-height: 1.18; letter-spacing: -.8px; }
.app-logo { display: block; width: 132px; height: auto; margin: 0 auto 30px; }
.description { max-width: 740px; margin: 0 auto 30px; font-size: 16px; line-height: 1.65; color: #575757; }
.download-button {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 64px;
  width: 100%;
  max-width: 670px;
  margin: 0 auto;
  padding: 18px 14px;
  border-radius: 12px;
  background: #0bb126;
  color: #fff;
  text-decoration: none;
  font-size: clamp(14px, 2.2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  transition: background-color .15s ease, box-shadow .15s ease;
}
.download-button:hover { background: #078c1c; box-shadow: 0 5px 16px rgb(11 177 38 / 16%); }
.download-button:active { background: #067719; }
a:focus-visible { outline: 3px solid #4b6ae9; outline-offset: 5px; }
.compatibility { margin: 12px 0 30px; color: #707070; font-size: 12px; line-height: 1.6; }
.qr-section { margin: 0 auto 25px; }
.qr-link { display: inline-block; border: 1px solid #dcdce1; border-radius: 10px; padding: 5px; background: white; line-height: 0; }
.qr-code { display: block; width: 152px; height: 152px; }
.qr-code svg { display: block; width: 100%; height: 100%; }
.qr-section figcaption { margin-top: 10px; font-size: 11px; line-height: 1.5; font-weight: 700; color: #707070; }
.installation-note { max-width: 570px; margin: 0 auto 25px; font-size: 13px; line-height: 1.7; color: #707070; }
.page-footer { margin: 20px auto 0; text-align: center; font-size: 11px; color: #767680; line-height: 1.6; }
.page-footer span { margin: 0 5px; }
@media (min-width: 600px) {
  body { padding: 40px 24px 24px; }
  .installer-header { padding: 38px 30px 40px; }
  .eyebrow { font-size: 11px; }
  .installer-content { padding: 60px 48px 40px; }
  h2 { margin-bottom: 38px; }
  .app-logo { width: 172px; margin-bottom: 40px; }
  .description { font-size: 18px; margin-bottom: 48px; }
  .download-button { min-height: 76px; }
  .compatibility { margin-bottom: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .download-button { transition: none; }
}