/* The shared-host landing page (spec 2.2): the institution's name and colour, and two ways in. */
:root {
  --accent: #4f46e5;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #020617; --surface: #0f172a; --text: #f1f5f9; --muted: #94a3b8; --border: #1e293b; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); font: 16px/1.5 Inter, system-ui, sans-serif; }
.landing { max-width: 640px; margin: 0 auto; padding: 15vh 16px 48px; }
.brand { display: flex; align-items: center; gap: 12px; }
.mark { width: 48px; height: 48px; border-radius: 10px; background: var(--accent) center / cover no-repeat; color: #fff; display: grid; place-items: center; font-weight: 700; }
h1 { font-size: 28px; line-height: 36px; margin: 0; }
.lead { color: var(--muted); margin: 8px 0 24px; }
.choices { display: grid; gap: 12px; }
.choice { display: grid; gap: 4px; padding: 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: inherit; text-decoration: none; }
.choice:hover, .choice:focus-visible { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 2px; }
.title { font-weight: 600; font-size: 18px; }
.detail { color: var(--muted); font-size: 14px; }