:root {
  --night: #0A0E1A; --surface: #10162A; --border: #222C46; --ink: #EEF1F7; --muted: #A9B2C6; --subtle: #8A93A8;
  --amber: #F2B544; --on-amber: #1A1204; --mint: #3FD4B0;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--night); color: var(--ink); }
body {
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background-image: linear-gradient(#111829 1px, transparent 1px), linear-gradient(90deg, #111829 1px, transparent 1px);
  background-size: 26px 26px;
}
main { max-width: 880px; margin: 0 auto; padding: 24px 16px 48px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; }
.brand img { border-radius: 10px; }
.hero { text-align: center; padding: 48px 0 32px; }
.app-icon { border-radius: 26px; box-shadow: 0 18px 50px rgba(242, 181, 68, .18); }
h1 { font-size: clamp(28px, 6vw, 44px); line-height: 1.15; margin: 24px 0 12px; letter-spacing: -0.5px; }
.lead { color: var(--muted); max-width: 560px; margin: 0 auto; font-size: 17px; }
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 22px; padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.card.mine { border-color: var(--amber); }
.card-head { display: flex; align-items: center; gap: 14px; }
.card-head h3 { margin: 0; font-size: 20px; }
.card-head p { margin: 2px 0 0; font-size: 14px; }
.os-icon { width: 44px; height: 44px; padding: 9px; border-radius: 14px; background: var(--night); border: 1px solid var(--border);
  fill: none; stroke: var(--amber); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.badge { margin-left: auto; font-size: 11px; font-weight: 800; letter-spacing: .5px; text-transform: uppercase; color: var(--on-amber);
  background: var(--amber); border-radius: 999px; padding: 3px 9px; white-space: nowrap; }
.buttons { display: flex; flex-direction: column; gap: 10px; }
.button { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 52px; padding: 0 18px;
  border-radius: 14px; border: 1px solid var(--border); color: var(--ink); text-decoration: none; font-weight: 700; }
.button small { color: var(--subtle); font-weight: 600; white-space: nowrap; }
.button.primary { background: var(--amber); border-color: var(--amber); color: var(--on-amber); }
.button.primary small { color: rgba(26, 18, 4, .7); }
.button:hover { filter: brightness(1.08); }
.button:focus-visible, summary:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.button[aria-disabled="true"] { opacity: .45; pointer-events: none; }
.hint, .muted { color: var(--subtle); font-size: 13px; margin: 0; }
.status { grid-column: 1 / -1; text-align: center; color: var(--muted); margin: 0; min-height: 1em; }
.steps { margin-top: 40px; }
.steps h2 { font-size: 20px; }
.steps ol { color: var(--muted); padding-left: 22px; display: grid; gap: 8px; }
.verify { margin-top: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 14px 18px; }
summary { cursor: pointer; font-weight: 700; }
dl { display: grid; gap: 6px; margin: 12px 0 0; }
dt { font-weight: 700; font-size: 13px; }
dd { margin: 0 0 8px; font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); word-break: break-all; }
footer { margin-top: 32px; text-align: center; color: var(--subtle); font-size: 13px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: no-preference) { .button { transition: filter .15s; } }