:root {
  --bg: #f3f5f8;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #0f766e;
  --brand-dark: #0b5f59;
  --danger: #b91c1c;
  --ok: #047857;
  --warn: #b45309;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #e8eef5 0%, var(--bg) 220px);
  min-height: 100vh;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: #0b1220;
  color: #fff;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.topbar .brand { font-weight: 700; letter-spacing: .3px; }
.topbar nav a {
  color: #dbe4ff;
  margin-right: 14px;
  font-size: 14px;
}
.topbar .user { color: #9ca3af; font-size: 13px; }

.wrap { max-width: 1100px; margin: 24px auto; padding: 0 16px 40px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .04);
}
h1, h2, h3 { margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 13px; }
.flash-ok, .flash-err {
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 14px;
}
.flash-ok { background: #ecfdf5; color: var(--ok); border: 1px solid #a7f3d0; }
.flash-err { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }

label { display: block; font-size: 13px; margin: 10px 0 4px; color: #374151; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 720px) { .row { grid-template-columns: 1fr; } }

.btn {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}
.btn:hover { background: var(--brand-dark); }
.btn.secondary { background: #374151; }
.btn.danger { background: var(--danger); }
.btn.linkish { background: transparent; color: var(--brand); padding: 0; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #e5e7eb;
}
.badge.ok { background: #d1fae5; color: var(--ok); }
.badge.err { background: #fee2e2; color: var(--danger); }
.confirm-box {
  margin-top: 12px;
  padding: 12px;
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: 8px;
}
.login-wrap {
  max-width: 420px;
  margin: 10vh auto;
  padding: 0 16px;
}
.actions { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.pre {
  white-space: pre-wrap;
  word-break: break-all;
  background: #0b1220;
  color: #e5e7eb;
  padding: 12px;
  border-radius: 8px;
  font-size: 12px;
}
.checkbox { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.checkbox input { width: auto; }