body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  margin: 0;
  background: #f6f7fb;
  color: #111827;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 16px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
  position: sticky;
  top: 0;
  background: rgba(246, 247, 251, 0.92);
  backdrop-filter: blur(10px);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.3px;
}

.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.card {
  background: #ffffff;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 8px 22px rgba(17, 24, 39, 0.06);
}

.stack {
  display: grid;
  gap: 12px;
}

.muted {
  color: rgba(17, 24, 39, 0.66);
}

.list {
  display: grid;
  gap: 10px;
}

.list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(17, 24, 39, 0.10);
  background: #ffffff;
}

.list-item:hover {
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.08);
}

.pill {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(17, 24, 39, 0.14);
  background: rgba(17, 24, 39, 0.03);
}

input, textarea, select, button {
  font: inherit;
}

input, textarea, select {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(17, 24, 39, 0.14);
  background: #ffffff;
  color: #111827;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

button {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(37, 99, 235, 0.22);
  background: rgba(37, 99, 235, 0.12);
  color: #0f172a;
  cursor: pointer;
}

button:hover {
  background: rgba(37, 99, 235, 0.18);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 860px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.error {
  color: #b42318;
}

.success {
  color: #027a48;
}