:root {
  --color-background: #ffffff;
  --color-text: #000000;
  --color-muted: #525252;
  --color-border: #e5e5e5;
  --color-surface: #f7f7f7;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-background);
}

button {
  font: inherit;
}

.status-bar {
  position: fixed;
  inset: 0 0 auto;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.94);
  padding: 0 16px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  z-index: 10;
}

.page {
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-text);
}

.center-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 88px minmax(0, auto);
  gap: 24px;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.mark {
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-text);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
}

.message {
  text-align: left;
}

.message h1 {
  margin: 0 0 10px;
  font-size: 34px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0;
}

.message p {
  margin: 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: 0;
}

.footer {
  position: fixed;
  right: 16px;
  bottom: 12px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  text-align: right;
  background: rgba(255, 255, 255, 0.92);
}

@media (max-width: 520px) {
  .center-view {
    grid-template-columns: 1fr;
    gap: 18px;
    justify-items: center;
    text-align: center;
  }

  .message {
    text-align: center;
  }
}