/* Dark always, matching the RAYS marketing page (Steve 2026-11-09: "Dark mode for all"). */
:root { color-scheme: dark; --bg: #05070c; --fg: #f4f6fa; --muted: #9aa3b5; --accent: #4f9bff; --card: #0f1420; --line: rgba(255,255,255,0.09); }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 Arial, "Helvetica Neue", Helvetica, sans-serif; -webkit-font-smoothing: antialiased; }
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 64px; }
h1 { font-size: 40px; line-height: 1.1; margin: 0 0 6px; letter-spacing: -0.02em; }
h2 { font-size: 22px; margin: 36px 0 8px; }
.sub { color: var(--muted); margin: 0 0 28px; font-size: 19px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
ul { padding-left: 22px; }
footer { color: var(--muted); font-size: 14px; margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); }
nav a { margin-right: 16px; }

/* Top bar: back to the RAYS home page (Steve 2026-11-11). */
nav.top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 16px; margin-bottom: 28px; }
nav.top .home { display: inline-flex; align-items: center; gap: 8px; color: var(--fg); text-decoration: none; font-weight: 600; }
nav.top .home:hover { color: var(--accent); }
nav.top .home img { width: 28px; height: 28px; border-radius: 7px; }
nav.top .links a { margin: 0 0 0 16px; }
nav.top .links a:first-child { margin-left: 0; }
/* Common questions: the question in orange, the answer beneath, each in its own card. */
:root { --orange: #ff8a1f; }
.qa { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--orange); border-radius: 12px; padding: 14px 18px; margin: 12px 0; }
.qa .q { color: var(--orange); font-size: 18px; margin: 0 0 6px; line-height: 1.35; }
.qa .a { margin: 0; color: #d7dce6; }