:root {
  --primary: #1a9e7e;
  --secondary: #2d3436;
  --accent: #ffffff;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: #1f2937; }
a { color: var(--primary); text-decoration: none; }
.skip-link { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { position: relative; padding: 8px 12px; background: #111; color: #fff; border-radius: 4px; }
.site-header { padding: 12px 20px; border-bottom: 1px solid #e5e7eb; }
.site-header nav { display: flex; gap: 16px; }
.hero { padding: 40px 20px; text-align: center; background: #f8f8f8; }
.avatar-video { width: min(90%, 720px); height: 260px; margin: 0 auto 16px; border-radius: 12px; background: linear-gradient(135deg, #e2f2f0 0%, #eaeef0 60%, #eef3f5 100%); position: relative; box-shadow: inset 0 0 0 1px #d0d7dd; }
.hero h1 { font-size: 2rem; margin: 12px 0 8px; }
.hero p { color: #374151; max-width: 700px; margin: 0 auto 16px; }
.cta-row { display: flex; justify-content: center; gap: 16px; margin-top: 6px; }
.btn { background: var(--primary); color: white; padding: 12px 18px; border-radius: 8px; display: inline-block; }
.yt-link { align-self: center; color: #111; padding: 12px 18px; border-radius: 8px; border: 1px solid #ccc; background: #fff; }
.card { padding: 32px 20px; max-width: 900px; margin: 0 auto; }
.questions { display: grid; grid-template-columns: 1fr; gap: 12px; }
.q-item label { display: block; font-weight: 600; margin-bottom: 4px; }
.q-item select { width: 100%; padding: 8px; border-radius: 6px; border: 1px solid #ccc; background: #fff; }
.ampel { margin: 12px auto; display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; }
.lamp-color { padding: 6px 12px; border-radius: 999px; border: 1px solid #ccc; background: #ddd; color: #111; }
.result-note { text-align: center; color: #374151; margin-top: 6px; }
.mail-row { text-align: center; margin-top: 8px; }
.site-footer { text-align: center; padding: 16px; border-top: 1px solid #e5e7eb; color: #6b7280; }

@media (min-width: 600px) {
  .questions { grid-template-columns: 1fr; }
}
@media (min-width: 900px) {
  .questions { grid-template-columns: 1fr; }
}