* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #0f172a;
  background: #f8fafc;
}
.topbar {
  display: flex;
  justify-content: space-between;
  padding: 14px 20px;
  background: white;
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
}
.topbar a { color: #2563eb; text-decoration: none; }
.container { max-width: 960px; margin: 0 auto; padding: 28px 20px 60px; }
.hero { background: white; border: 1px solid #e2e8f0; border-radius: 16px; padding: 28px; }
.badge { color: #2563eb; font-weight: 700; letter-spacing: .08em; font-size: 12px; }
h1 { margin: 8px 0 12px; font-size: 34px; }
.actions { display: flex; gap: 10px; margin-top: 18px; }
.btn { border: 1px solid #cbd5e1; padding: 10px 14px; border-radius: 10px; text-decoration: none; color: #0f172a; }
.btn.primary { background: #2563eb; border-color: #2563eb; color: white; }
.section { margin-top: 24px; background: white; border: 1px solid #e2e8f0; border-radius: 16px; padding: 24px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.card { border: 1px solid #e2e8f0; border-radius: 12px; padding: 14px; background: #fff; }
ul { padding-left: 18px; line-height: 1.8; }
form { display: grid; gap: 10px; }
input, textarea, button {
  width: 100%; border: 1px solid #cbd5e1; border-radius: 10px; padding: 11px 12px; font: inherit;
}
button { background: #0f172a; color: #fff; border-color: #0f172a; cursor: pointer; }
#msg { margin-top: 10px; color: #16a34a; }