:root {
  --bg: #F4F5F7;
  --surface: #FFFFFF;
  --text: #1A1C1E;
  --text-secondary: #5F6368;
  --border: #E3E5E8;
  --primary: #1B5E3F;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171A;
    --surface: #1E2226;
    --text: #F2F3F4;
    --text-secondary: #A3A9AE;
    --border: #30363B;
    --primary: #4BAE84;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--primary); }
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 28px 32px;
}
h1 { font-size: 26px; margin: 0 0 4px; letter-spacing: -0.2px; }
h2 { font-size: 18px; margin: 32px 0 8px; }
.updated { color: var(--text-secondary); font-size: 14px; margin: 0 0 24px; }
.nav-links { font-size: 14px; margin-bottom: 20px; }
.nav-links a { margin-right: 16px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Landing page */
.hero { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; }
.hero img { width: 64px; height: 64px; border-radius: 18px; flex-shrink: 0; }
.hero h1 { margin: 0; }
.tagline { color: var(--text-secondary); font-size: 15px; margin: 4px 0 0; }
.disclaimer { color: var(--text-secondary); font-size: 13px; margin-top: 20px; }
.links { display: flex; gap: 12px; margin-top: 24px; }
.links a {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
}
.links a:hover { border-color: var(--primary); }

.screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(156px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.screenshot {
  display: block;
  text-decoration: none;
  text-align: center;
}
.thumb-frame {
  display: block;
  width: 156px;
  height: 337.6px;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  margin: 0 auto;
}
.thumb-frame iframe {
  width: 390px;
  height: 844px;
  border: 0;
  transform: scale(0.4);
  transform-origin: top left;
  pointer-events: none;
}
.screenshot-caption {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}