Euler source The code that runs the solver shell and this site, version 4.34.2 Repository on GitHub

Maintenance holding page — the first real response served through the edge.

112 lines of CSS Raw file Open on GitHub

/* Maintenance holding page — the first real response served through the edge.
 * Establishes the web-content look & feel and proves the edge CSP fallback
 * (default-src 'self'; style-src 'self') on a static response: this file is the
 * only style source, loaded same-origin, with no inline styles anywhere.
 * Theme-aware (prefers-color-scheme); no JavaScript. */

:root {
  --bg: #f7f8fa;
  --bg-accent: #eef1f6;
  --card: #ffffff;
  --fg: #1b2330;
  --muted: #6b7688;
  --accent: #3b6ea5;
  --border: #e3e7ee;
  --shadow: 0 10px 40px rgba(27, 35, 48, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1319;
    --bg-accent: #141a22;
    --card: #171e28;
    --fg: #e7ecf3;
    --muted: #8b97a8;
    --accent: #6fa8dc;
    --border: #232c38;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background:
    radial-gradient(1200px 600px at 50% -10%, var(--bg-accent), transparent 70%),
    var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  line-height: 1.55;
}

.card {
  width: 100%;
  max-width: 30rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 3rem 2.5rem;
  text-align: center;
}

.glyph {
  font-size: 3.5rem;
  line-height: 1;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 1rem 0 0.75rem;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
}

.lead {
  margin: 0 0 1.25rem;
  font-size: 1.02rem;
  color: var(--fg);
}

.muted {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* The way back to the site — quiet, sentence case, above the footer rule. */
.back-row {
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
}
.back-link {
  color: var(--muted);
  text-decoration: none;
}
.back-link:hover { color: var(--accent); }

/* Notice · terms. Sentence case, not the .muted tagline's upper: a copyright
   line reads as a shout in caps (and the © of a name is not a label). */
.footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  text-transform: none;
  letter-spacing: normal;
}
.footer a { color: var(--accent); }
.footer .fsep { opacity: 0.5; }

strong { color: var(--accent); }