:root {
  color-scheme: dark;
  --bg: #0b1016;
  --panel: rgba(17, 25, 35, 0.72);
  --border: rgba(180, 195, 210, 0.18);
  --text: #ecf2f7;
  --muted: #a7b5c5;
  --accent: #f0c36d;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

html {
  background:
    radial-gradient(circle at top, rgba(240, 195, 109, 0.06), transparent 28%),
    linear-gradient(180deg, #101723, #0b1016 55%, #070b10 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.04), transparent 30%),
    linear-gradient(330deg, rgba(108, 140, 190, 0.06), transparent 26%),
    var(--bg);
  display: grid;
  place-items: center;
  padding: 2rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--accent);
  color: #1f1608;
  padding: 0.7rem 1rem;
  border-radius: 999px;
}

.marker {
  width: min(100%, 46rem);
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(1.1);
  padding: clamp(2rem, 6vw, 4rem);
}

.marker img {
  width: min(100%, 200px);
  height: auto;
  margin: 0 auto 1.75rem;
  display: block;
  border-radius: 18px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.24);
}

h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.05;
}

h2 {
  margin: 0;
  color: var(--muted);
  font-weight: 400;
  font-size: clamp(1.05rem, 2.6vw, 1.5rem);
}

.error {
  max-width: 28rem;
}

.error h1 {
  font-size: 2.2rem;
}

.error p {
  color: var(--muted);
  margin: 0.85rem 0 0;
}