* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f4f5;
  color: #18181b;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px;
}
.wrap.wide { max-width: 1100px; }
h1 { font-size: 30px; margin: 10px 0; }
h2 { margin-top: 28px; }
.lead, .hint, .small { color: #52525b; }
form {
  background: white;
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 8px 28px rgba(0,0,0,.06);
}
label {
  display: block;
  margin-top: 14px;
  margin-bottom: 6px;
  font-weight: 700;
}
input, select, button {
  width: 100%;
  min-height: 46px;
  border-radius: 12px;
  border: 1px solid #d4d4d8;
  padding: 10px 12px;
  font-size: 16px;
  background: white;
}
button {
  margin-top: 20px;
  background: #18181b;
  color: white;
  border: 0;
  font-weight: 800;
  cursor: pointer;
}
.ok, .err {
  padding: 12px 14px;
  border-radius: 14px;
  margin: 14px 0;
  font-weight: 700;
}
.ok { background: #dcfce7; color: #166534; }
.err { background: #fee2e2; color: #991b1b; }
.tablewrap {
  overflow-x: auto;
  background: white;
  border-radius: 18px;
  box-shadow: 0 8px 28px rgba(0,0,0,.06);
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 620px;
}
th, td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid #e4e4e7;
  vertical-align: top;
}
th { background: #fafafa; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0;
}
.card {
  background: white;
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 8px 28px rgba(0,0,0,.06);
}
.card strong {
  display: block;
  font-size: 28px;
}
.card span {
  display: block;
  color: #71717a;
  margin-top: 4px;
}
a { color: #2563eb; font-weight: 700; }
@media (max-width: 700px) {
  .cards { grid-template-columns: 1fr; }
  h1 { font-size: 26px; }
}