:root {
  --bg: #f3efe6;
  --panel: #fffdf8;
  --ink: #221c16;
  --muted: #6f675e;
  --line: #e4dccf;
  --accent: #8f2d1f;
  --accent-ink: #fff8f3;
  --green: #1f4d3a;
  --shadow: 0 18px 50px rgba(60, 42, 24, 0.08);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(143, 45, 31, 0.08), transparent 28%),
    var(--bg);
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}
.login-card, .panel, .stat {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.login-card {
  width: min(440px, 100%);
  padding: 36px;
  border-radius: 18px;
}
.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-size: 12px;
}
h1 { margin: 0 0 8px; font-size: 36px; font-weight: 700; }
h2 { margin: 0; font-size: 28px; }
.lede, .muted { color: var(--muted); }
label { display: grid; gap: 6px; margin: 14px 0; font-size: 14px; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 10px 12px;
}
button[type="submit"], .primary, nav button.active {
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
}
button[type="submit"], .primary {
  border-radius: 999px;
  padding: 10px 18px;
}
.error { color: var(--accent); min-height: 1.2em; }

.shell { min-height: 100vh; display: grid; grid-template-columns: 230px 1fr; }
aside {
  padding: 24px 16px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  background: rgba(255, 253, 248, 0.8);
}
.brand { display: grid; padding: 8px 12px 22px; }
.brand span { color: var(--muted); font-size: 13px; }
nav { display: grid; gap: 6px; }
nav button, .ghost, .aside-foot button {
  border: 0;
  background: transparent;
  text-align: left;
  border-radius: 10px;
  padding: 10px 12px;
}
nav button.active { font-weight: 700; }
.aside-foot { margin-top: auto; display: grid; gap: 8px; padding: 12px; }
main { padding: 32px; }
.page-head, .filters, .row, .stats-grid, .actions { display: flex; gap: 12px; align-items: center; }
.page-head { justify-content: space-between; margin-bottom: 18px; }
.filters, .actions { flex-wrap: wrap; margin-bottom: 16px; }
.filters label, .actions label { margin: 0; min-width: 140px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.stat { border-radius: 16px; padding: 18px; }
.stat b { display: block; font-size: 28px; margin-top: 6px; }
.panel { border-radius: 16px; padding: 8px 16px 16px; overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 14px; }
th { color: var(--muted); font-weight: 600; }
a { color: var(--green); }
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f3e7df;
  color: var(--accent);
  font-size: 12px;
}
.ok { color: var(--green); }
.bad { color: var(--accent); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.span-2 { grid-column: span 2; }
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  aside { border-right: 0; border-bottom: 1px solid var(--line); }
  .stats-grid, .form-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
}