:root {
  color-scheme: light;
  --bg: #f0f2f6;
  --panel: #ffffff;
  --border: #c9d1e0;
  --text: #111827;
  --muted: #5c6570;
  --accent: #2563eb;
  --accent-soft: #eff4ff;
  --ok: #047857;
  --danger: #dc2626;
  --pill: #e8ecf4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, "Segoe UI", Roboto, "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}
body.pc-login-page .layout {
  min-height: 100vh;
}
body.pc-login-page nav.side {
  display: none;
}
body.pc-login-page main {
  max-width: 28rem;
  margin: 0 auto;
  padding-top: 3rem;
}
header.pc-top {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-start;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.06);
}
header.pc-top .brand b { font-size: 1.05rem; font-weight: 600; }
header.pc-top .brand small {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.2rem;
  max-width: 46rem;
  line-height: 1.45;
}
header.pc-top .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}
.layout {
  display: grid;
  grid-template-columns: 228px 1fr;
  gap: 0;
  width: 100%;
  min-height: calc(100vh - 72px);
}
@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; }
  nav.side {
    position: relative;
    top: 0;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}
nav.side {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 0.75rem 0.5rem 1rem;
  position: sticky;
  top: 72px;
  align-self: start;
  max-height: calc(100vh - 72px);
  overflow: auto;
}
nav.side .nav-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 0.35rem 0.45rem 0.35rem;
  font-weight: 600;
}
nav.side a,
nav.side summary {
  display: block;
  padding: 0.4rem 0.5rem;
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 0.08rem;
  cursor: pointer;
}
nav.side a:hover,
nav.side summary:hover {
  background: var(--accent-soft);
  color: var(--accent);
}
nav.side a.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
nav.side details {
  margin-bottom: 0.25rem;
}
nav.side details > summary {
  list-style: none;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.78rem;
}
nav.side details > summary::-webkit-details-marker { display: none; }
nav.side .nav-l2 {
  padding-left: 0.5rem;
  margin-top: 0.15rem;
}
nav.side .nav-l2 a {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text);
}
main.pc-main {
  padding: 1rem clamp(0.45rem, 1.2vw, 1rem) 2.5rem;
  max-width: 100%;
  min-width: 0;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.2rem;
  margin-bottom: 1rem;
}
.card h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
  font-weight: 600;
}
.sub { color: var(--muted); font-size: 0.85rem; line-height: 1.5; margin: 0 0 0.75rem; }
label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}
input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 0.92rem;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.row { margin-bottom: 0.75rem; }
button {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 0.95rem;
  font-size: 0.88rem;
  font-weight: 500;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-danger { background: #d9534f; color: #fff; border: none; border-radius: 4px; padding: .35rem .9rem; cursor: pointer; font-size: .875rem; }
.btn-danger:hover { filter: brightness(1.08); }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }
.err { color: var(--danger); font-size: 0.85rem; margin-top: 0.5rem; min-height: 1.1rem; }
.hidden { display: none !important; }
.pill {
  display: inline-block;
  padding: 0.12rem 0.42rem;
  border-radius: 4px;
  font-size: 0.72rem;
  background: var(--pill);
  color: var(--muted);
}
table.pc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
table.pc-table th,
table.pc-table td {
  text-align: left;
  padding: 0.35rem 0.3rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.pc-table th { color: var(--muted); font-weight: 500; }
table.pc-table input.filter-input {
  width: 100%;
  font-size: 0.74rem;
  padding: 0.28rem 0.35rem;
}
.actions-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin-top: 0.5rem; }