:root {
  --dark: #37484F;
  --accent: #2FA69A;
  --bg: #F4F4F5;
  --card: #FFFFFF;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: #222;
  margin: 0;
}
main {
  padding: 24px 16px 48px;
  max-width: 480px;
  margin: 0 auto;
}
.card {
  background: var(--card);
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,.12);
  margin-bottom: 16px;
}
h1 { font-size: 20px; margin: 0 0 16px; color: var(--dark); }
h2 { font-size: 15px; margin: 0 0 8px; color: var(--dark); }
input[type=text], select {
  width: 100%;
  box-sizing: border-box;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 15px;
  margin-bottom: 12px;
}
button, .btn {
  padding: 10px 18px;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { background: #1f8b81; }
.btn.secondary { background: var(--dark); }
.flash-ok { background: #e6f7f4; color: #146c5f; padding: 10px; border-radius: 6px; font-size: 13px; margin-bottom: 12px; }
.flash-err { background: #fdecea; color: #a12622; padding: 10px; border-radius: 6px; font-size: 13px; margin-bottom: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
td, th { text-align: left; padding: 4px 6px; border-bottom: 1px solid #eee; }
.muted { color: #888; }
.hero { text-align: center; margin-bottom: 8px; }
.hero img { width: 96px; height: 96px; }
ol, p { line-height: 1.5; }