:root {
  color-scheme: light;
  --page-bg: #f2f4f7;
  --frame-bg: #ffffff;
  --frame-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.96), rgba(242, 244, 247, 0.92)),
    var(--page-bg);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #0f172a;
}

.page {
  width: 100%;
  padding:
    max(0px, env(safe-area-inset-top))
    0
    max(16px, env(safe-area-inset-bottom))
    0;
}

.image-stack {
  width: min(100%, 768px);
  margin: 0 auto;
  background: var(--frame-bg);
  box-shadow: var(--frame-shadow);
}

.long-image {
  display: block;
  width: 100%;
  height: auto;
  border: 0;
}

@media (max-width: 768px) {
  body {
    background: #ffffff;
  }

  .page {
    padding-bottom: max(0px, env(safe-area-inset-bottom));
  }

  .image-stack {
    width: 100%;
    box-shadow: none;
  }
}