:root {
  color-scheme: dark;
  --ink: #e9eef4;
  --muted: #b7c3d0;
  --panel: rgba(8, 18, 30, 0.72);
  --edge: rgba(255, 255, 255, 0.14);
  --accent: #7fd1ff;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #06101c;
}
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  place-items: center;
  padding: 24px 16px;
  background:
    linear-gradient(180deg, rgba(4, 10, 20, 0.35) 0%, rgba(4, 10, 20, 0.55) 100%),
    url("/static/bg.jpg") center / cover no-repeat,
    radial-gradient(1200px 600px at 50% 110%, #0d2a4a 0%, #06101c 60%);
}
.notice {
  max-width: 560px;
  width: 100%;
  padding: 36px 32px;
  border: 1px solid var(--edge);
  border-radius: 16px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  text-align: center;
}
.eyebrow {
  margin: 0 0 8px;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 { margin: 0 0 16px; font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 650; letter-spacing: -0.01em; }
.notice p { margin: 0 0 10px; line-height: 1.55; color: var(--muted); }
.notice p:last-child { margin-bottom: 0; }
footer { font-size: 0.85rem; color: var(--muted); opacity: 0.85; text-align: center; }