/* Schlichte, gut lesbare Gestaltung – nur Systemschriften, nichts von fremden Servern. */
:root {
  --green: #2e7d32;
  --green-dark: #1b5e20;
  --text: #1f2421;
  --muted: #55605a;
  --bg: #f6f8f6;
  --card: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}
main { max-width: 34rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
h1 { font-size: 1.8rem; line-height: 1.25; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.25rem; margin: 0 0 0.5rem; }
.card {
  background: var(--card);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
  margin: 1rem 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.step { display: flex; gap: 0.8rem; align-items: flex-start; }
.step-number {
  flex: 0 0 2rem; height: 2rem; border-radius: 50%;
  background: var(--green); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.button {
  display: block; width: 100%;
  margin: 0.6rem 0 0; padding: 0.9rem 1rem;
  border: 0; border-radius: 12px;
  background: var(--green); color: #fff;
  font-size: 1.1rem; font-weight: 600; text-align: center; text-decoration: none;
  cursor: pointer;
}
.button:hover, .button:focus { background: var(--green-dark); }
.button.secondary { background: #e3ebe4; color: var(--text); }
.button[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }
.hint { color: var(--muted); font-size: 1rem; }
.notice { border-left: 4px solid var(--green); }
.warning { border-left: 4px solid #c62828; }
footer { text-align: center; font-size: 0.95rem; color: var(--muted); margin-top: 2rem; }
footer a { color: var(--muted); }
[hidden] { display: none !important; }