:root {
  color-scheme: light dark;
  --bg: #f8f9fb;
  --fg: #26313b;
  --muted: #6b7783;
  --accent: #425f55;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100svh; display: grid; place-items: center; }
main { width: 100%; padding: 48px 24px 88px; text-align: center; }
.brand-mark { display: block; width: 36px; height: 36px; margin: 0 auto 22px; color: var(--accent); }
h1 { margin: 0; font-size: clamp(32px, 5vw, 46px); font-weight: 450; line-height: 1.2; letter-spacing: -1.4px; }
.contact { display: inline-block; margin-top: 36px; padding: 8px 4px; color: var(--muted); font-size: 13px; line-height: 1.6; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 4px; overflow-wrap: anywhere; }
.contact:hover { color: var(--accent); text-decoration-color: currentColor; }
.contact:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #171d24; --fg: #e4e9ed; --muted: #99a6b3; --accent: #b7d3c2; }
}
@media (max-width: 760px) { main { padding-inline: 20px; } }

/* Assistant product page; the public root remains the umbrella brand. */
.product-page { display: flex; flex-direction: column; }
.product-header { width: 100%; max-width: 1120px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px clamp(20px, 5vw, 64px); font-size: 13px; }
.product-header a { color: var(--muted); text-decoration: none; }
.product-header a:hover { color: var(--accent); }
.product-header .parent-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); font-size: 15px; font-weight: 550; }
.parent-brand svg { width: 24px; height: 24px; color: var(--accent); }
.product-page main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding-bottom: 120px; }
.product-description { margin: 20px 0 0; color: var(--fg); font-size: 16px; line-height: 1.7; }
.access-status { margin: 36px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.product-header a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: 3px; }