:root {
  --bg: #f3f5f7;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --line: #d9e2ec;
  --accent: #0f6e56;
  --danger: #9b1c1c;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #e8eef3 0%, var(--bg) 240px);
  color: var(--text);
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.9);
}
.topbar-actions { display: flex; gap: 12px; align-items: center; }
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }
section { background: var(--card); border: 1px solid var(--line); padding: 18px; margin-bottom: 20px; }
h1, h2 { margin-top: 0; }
label { display: grid; gap: 6px; font-size: 14px; }
input, button, summary {
  font: inherit;
}
input {
  padding: 8px 10px;
  border: 1px solid var(--line);
  background: #fff;
}
button, a {
  color: var(--accent);
}
button {
  border: 1px solid var(--line);
  background: #f8fafc;
  padding: 8px 12px;
  cursor: pointer;
}
.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: end;
}
.stack-form { display: grid; gap: 8px; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; vertical-align: top; }
.actions { display: grid; gap: 8px; min-width: 180px; }
.muted { color: var(--muted); font-size: 12px; word-break: break-all; }
.ok { color: var(--accent); }
.error { color: var(--danger); }
.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.login-card {
  width: min(420px, 92vw);
  background: var(--card);
  border: 1px solid var(--line);
  padding: 28px;
  display: grid;
  gap: 14px;
}
.login-card form { display: grid; gap: 12px; }