:root {
  color-scheme: dark;
  --background: #14181f;
  --surface: #181d25;
  --foreground: #fafafa;
  --muted: #9da3af;
  --primary: #de173f;
  --border: #29303d;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--foreground);
  background: var(--background);
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.6; }
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: 4px; }
button, input, textarea { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button, a { transition: color 150ms, background-color 150ms, border-color 150ms; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--foreground); outline-offset: 4px; }
h1, h2, h3, p { margin: 0; }
.skip-link { position: absolute; left: 16px; top: -80px; background: var(--primary); padding: 12px 20px; z-index: 10; }
.skip-link:focus { top: 12px; }
header { border-bottom: 1px solid var(--border); background: rgba(20,24,31,.9); }
.header-inner, .footer-inner { max-width: 1100px; margin: auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--foreground); text-decoration: none; font-size: 20px; font-weight: 750; white-space: nowrap; }
.brand img { object-fit: contain; }
.header-label { color: var(--muted); font-size: 13px; background: var(--surface); border: 1px solid var(--border); border-radius: 40px; padding: 6px 14px; white-space: nowrap; }
main { background-image: linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px), linear-gradient(90deg,rgba(255,255,255,.022) 1px, transparent 1px), radial-gradient(ellipse at 30% 0%,rgba(222,23,63,.10),transparent 50%); background-size: 48px 48px,48px 48px,100% 100%; }
.content { max-width: 808px; margin: auto; padding: 64px 24px 64px; }
.hero { text-align: center; margin-bottom: 40px; }
.eyebrow { display: inline-block; border: 1px solid rgba(222,23,63,.3); background: rgba(222,23,63,.08); color: #fb768f; border-radius: 99px; padding: 7px 16px; font-size: 11px; letter-spacing: .12em; font-weight: 650; }
h1 { font-size: clamp(36px,6vw,56px); line-height: 1.06; letter-spacing: -.045em; font-weight: 750; margin: 24px 0 20px; }
.hero > p { max-width: 550px; margin: auto; color: var(--muted); line-height: 1.7; font-size: 17px; }
.panel { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.download-panel { padding: 28px 32px 24px; box-shadow: 0 20px 60px rgba(0,0,0,.15); scroll-margin-top: 20px; }
.download-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.overline { color: var(--muted); font-size: 11px; letter-spacing: .10em; text-transform: uppercase; font-weight: 600; }
.text-button { display: inline-flex; align-items: center; gap: 8px; color: var(--foreground); background: none; border: 0; padding: 10px 0 10px 10px; min-height: 44px; font-size: 13px; white-space: nowrap; }
.text-button:hover { color: #fb768f; }
.text-button[aria-expanded=true] span { transform: rotate(180deg); }
.device-picker { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 0 20px; }
.device-picker button { color: var(--muted); border: 1px solid var(--border); border-radius: 8px; padding: 10px 13px; background: var(--background); font-size: 13px; min-height: 44px; }
.device-picker button:hover, .device-picker button[aria-pressed=true] { color: white; border-color: var(--primary); background: rgba(222,23,63,.10); }
.os-panel + .os-panel { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
.enhanced .os-panel { margin: 0; padding: 0; border: 0; }
.enhanced.all-platforms .os-panel + .os-panel { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
h2 { font-size: 25px; line-height: 1.25; letter-spacing: -.025em; font-weight: 650; }
h2:focus { outline: none; }
.platform-description { color: var(--muted); font-size: 14px; margin-top: 10px; }
.button { display: flex; align-items: center; justify-content: center; gap: 12px; border: 1px solid transparent; border-radius: 10px; min-height: 50px; padding: 12px 20px; font-size: 14px; font-weight: 650; text-decoration: none; line-height: 1.5; text-align: center; }
.os-panel > .button, .button-row { margin-top: 24px; }
.primary { background: var(--primary); color: white; box-shadow: 0 0 20px rgba(222,23,63,.22); }
.primary:hover { background: #c91338; }
.secondary { background: var(--background); border-color: var(--border); }
.secondary:hover { border-color: var(--primary); background: rgba(222,23,63,.06); }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.download-meta { display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; color: var(--muted); font-size: 11px; margin-top: 12px; }
.download-meta a { text-decoration-color: #536073; }
.download-meta a:hover { color: var(--foreground); }
.platform-note { border-top: 1px solid var(--border); padding-top: 16px; margin-top: 20px; font-size: 13px; color: var(--muted); }
.platform-note strong { color: var(--foreground); font-weight: 600; }
.platform-note p { margin: 6px 0 10px; }
.ios-steps { color: var(--muted); padding-left: 20px; font-size: 14px; margin: 20px 0; }
.ios-steps li + li { margin-top: 6px; }
.download-footnote { color: var(--muted); text-align: center; font-size: 12px; border-top: 1px solid var(--border); margin-top: 24px; padding-top: 16px; }
.steps-panel { margin-top: 24px; padding: 24px; }
.steps { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; margin: 0; padding: 0; list-style: none; }
.steps li { display: flex; gap: 10px; }
.step-number { background: rgba(222,23,63,.12); border-radius: 50%; width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; color: #fb768f; font-size: 12px; font-weight: 650; flex-shrink: 0; }
h3 { font-size: 13px; font-weight: 650; margin: 3px 0 8px; }
.steps p { font-size: 12px; color: var(--muted); line-height: 1.7; }
.config-panel { margin-top: 16px; padding: 22px 28px; scroll-margin-top: 20px; }
summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; cursor: pointer; font-size: 14px; font-weight: 600; list-style: none; min-height: 24px; }
summary::-webkit-details-marker { display: none; }
summary > span { font-size: 22px; font-weight: 400; color: var(--muted); }
details[open] summary > span { transform: rotate(45deg); }
.config-content { border-top: 1px solid var(--border); margin-top: 20px; padding-top: 20px; font-size: 13px; color: var(--muted); }
.config-content strong { color: var(--foreground); }
.setup-guide { margin: 22px 0; padding-left: 24px; }
.setup-guide li { padding-left: 6px; }
.setup-guide li + li { margin-top: 20px; }
.setup-guide li::marker { color: #fb768f; font-weight: 650; }
.setup-guide li > strong { font-size: 14px; }
.setup-guide p { margin-top: 6px; }
.setup-mobile { border-left: 2px solid var(--border); padding-left: 12px; }
.settings-caption { margin-top: 24px; font-size: 12px; font-weight: 600; color: var(--foreground); }
.field-hint { font-size: 11px; margin-top: 6px; }
.setup-finish { border-top: 1px solid var(--border); padding-top: 20px; }
.setup-reference { font-size: 12px; }
.setup-reference a { display: inline-block; margin-top: 6px; }
.config-grid { margin: 20px 0 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px 16px; }
.config-field { min-width: 0; }
.full-width { grid-column: 1 / -1; }
.config-field label { display: block; font-size: 12px; margin-bottom: 7px; }
.copy-row { display: flex; gap: 6px; align-items: center; padding: 4px 8px; border: 1px solid var(--border); background: var(--background); border-radius: 8px; }
.copy-row input, .copy-row textarea { min-width: 0; width: 100%; padding: 10px 0; border: 0; background: transparent; color: var(--foreground); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.copy-row textarea { resize: none; height: 42px; line-height: 20px; overflow-wrap: anywhere; }
.copy-row button { color: #fb768f; background: none; border: 0; padding: 10px 4px; min-height: 44px; font-size: 11px; }
.copy-status { color: var(--foreground); min-height: 20px; margin-top: 8px; font-size: 12px; }
.consent-note { display: flex; gap: 12px; padding: 20px 4px 0; font-size: 12px; color: var(--muted); }
.consent-note strong { color: var(--foreground); font-weight: 600; }
.consent-mark { color: #fb768f; }
footer { border-top: 1px solid var(--border); background: var(--background); }
.footer-inner { padding-top: 22px; padding-bottom: 22px; }
.footer-inner .brand { font-size: 16px; }
.footer-inner > a:last-child { color: var(--muted); font-size: 12px; text-decoration: none; }
.footer-inner > a:last-child:hover { color: var(--foreground); }
@media (max-width: 620px) {
  .header-inner, .footer-inner { padding-left: 20px; padding-right: 20px; }
  .brand { gap: 6px; font-size: 18px; }
  .header-label { font-size: 11px; padding: 6px 10px; }
  .content { padding: 40px 20px 40px; }
  .hero { margin-bottom: 28px; }
  .hero > p { font-size: 15px; }
  .download-panel { padding: 20px; }
  h2 { font-size: 23px; }
  .button-row { grid-template-columns: 1fr; }
  .download-heading { gap: 6px; }
  .overline { font-size: 10px; }
  .steps { grid-template-columns: 1fr; gap: 20px; }
  .steps li + li { padding-top: 16px; border-top: 1px solid var(--border); }
  h3 { font-size: 14px; }
  .steps p { font-size: 13px; }
  .config-panel { padding: 20px; }
  .config-grid { grid-template-columns: 1fr; }
  .key-row { align-items: flex-start; }
  .copy-row textarea { height: 64px; }
  .footer-inner { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; } }