/* Flux Scanner site. Same tokens as the app (docs/design/DESIGN.md). No external fonts,
   scripts or trackers: visitors' addresses reach nobody but Cloudflare. */
:root {
  --bg: #F2F2F7; --surface: #FFFFFF; --ink: #1D1D1F; --ink2: #6E6E73;
  --accent: #0A5FD1; --line: #D2D2D7; --radius: 18px;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --arabic: "Segoe UI", "Noto Naskh Arabic", "Noto Sans Arabic", Tahoma, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --surface: #1C1C1E; --ink: #F5F5F7; --ink2: #98989D; --accent: #5AA2FF; --line: #38383A; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--sans); }
html[lang="ar"] body { font-family: var(--arabic); }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
header.top a.lang { color: var(--accent); text-decoration: none; font-size: 15px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand svg { width: 36px; height: 36px; }
h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.15; margin: 40px 0 12px; letter-spacing: -0.02em; }
.lead { color: var(--ink2); font-size: 19px; margin: 0 0 28px; }
/* Deep blue in both modes: white on #0A5FD1 is 5.9:1 (on the dark accent #5AA2FF it would be 2.5:1). */
.scan-btn { display: inline-flex; align-items: center; gap: 10px; background: #0A5FD1; color: #fff;
  padding: 16px 28px; border-radius: 999px; font-weight: 600; text-decoration: none; min-height: 48px; }
.note { color: var(--ink2); font-size: 14px; margin-top: 10px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 40px 0; }
.card { background: var(--surface); border-radius: var(--radius); padding: 18px; }
.card h2 { font-size: 17px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--ink2); font-size: 15px; }
section h2 { font-size: 22px; margin: 36px 0 8px; }
section p, section li { color: var(--ink); }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; color: var(--ink2); font-size: 14px; }
footer a { color: var(--accent); }
a { color: var(--accent); }
.sha { word-break: break-all; }
.sha code { font-size: 12px; }