:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-alt: #eef4ff;
  --text: #172033;
  --muted: #60708e;
  --line: #d8e1f0;
  --brand: #1d4ed8;
  --brand-strong: #1e3a8a;
  --accent: #0f766e;
  --danger: #b91c1c;
  --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(29, 78, 216, 0.12), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--text);
}
a { color: var(--brand); text-decoration: none; }
code {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  background: #edf2ff;
  padding: 0.15rem 0.35rem;
  border-radius: 0.4rem;
  word-break: break-all;
}
button, input, select {
  font: inherit;
}
button {
  border: 0;
  border-radius: 0.85rem;
  padding: 0.8rem 1rem;
  background: var(--brand);
  color: white;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}
button.secondary { background: #dbe7ff; color: var(--brand-strong); }
button:hover { transform: translateY(-1px); }
button:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 0.8rem 0.9rem;
  background: #fff;
}
label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 60px;
}
.shell.narrow { width: min(720px, calc(100vw - 32px)); }
.hero, .panel {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(216, 225, 240, 0.9);
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
  padding: 1.4rem;
  margin-bottom: 1.2rem;
}
.hero h1, .panel h1, .panel h2, .panel h3 {
  margin: 0 0 0.5rem;
}
.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
.subtitle {
  color: var(--muted);
  margin: 0.3rem 0 0;
  line-height: 1.6;
}
.error {
  color: var(--danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 0.85rem;
  padding: 0.85rem 1rem;
}
.panel-head, .model-head, .model-toolbar, .logout-form {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.employee-form, .custom-model-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}
.span-2 { grid-column: span 2; }
.employee-grid, .model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}
.employee-card, .model-card {
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  padding: 1rem;
}
.employee-main p, .model-card p { margin: 0.45rem 0; }
.employee-actions {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}
.employee-model-picker { display: grid; gap: 0.35rem; }
.qr-panel {
  border: 1px dashed #b8c7ea;
  border-radius: 1rem;
  padding: 0.9rem;
  background: var(--panel-alt);
}
.qr-panel.standalone { margin-top: 1rem; }
.qr-image {
  width: min(320px, 100%);
  display: block;
  margin: 0 auto 0.75rem;
  border-radius: 1rem;
  background: white;
}
.qr-status { margin: 0; color: var(--brand-strong); }
.summary-chip, .metric-chip, .model-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: #edf3ff;
  color: var(--brand-strong);
  font-size: 0.92rem;
}
.model-summary, .model-metrics {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}
.model-card.current { border-color: #7aa2ff; }
.model-card.recommended { border-color: #34d399; }
.model-card-head {
  display: flex;
  gap: 0.8rem;
  justify-content: space-between;
  align-items: flex-start;
}
.model-family, .benchmark-line, .empty { color: var(--muted); }
.model-badge-current { background: #dbeafe; }
.model-badge-recommended { background: #d1fae5; color: #065f46; }
.benchmark-ok { color: #047857; }
.benchmark-bad { color: var(--danger); }
.benchmark-pending { color: var(--muted); }
.employee-link { font-weight: 600; }
@media (max-width: 760px) {
  .shell { width: min(100vw - 20px, 100%); padding-top: 16px; }
  .span-2 { grid-column: span 1; }
}