:root {
  --ink: #1c1916;
  --ink-muted: #6b655c;
  --paper: #f6f3ee;
  --paper-elevated: #fffcf7;
  --gold: #c4a35a;
  --gold-soft: #d4b87a;
  --line: #e5dfd4;
  --card: #fffcf7;
  --danger: #b54a3c;
  --ok: #3d6b4f;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
}
a { color: var(--gold); text-decoration: none; }
.shell { display: flex; min-height: 100vh; }
.sider {
  width: 248px;
  background: #171411;
  color: #fffcf7;
  padding: 28px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand {
  font-family: var(--font-serif);
  font-size: 22px;
  padding: 0 8px 18px;
}
.brand .sub {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(196,163,90,.9);
  font-family: var(--font-sans);
}
.sider nav a {
  display: block;
  color: rgba(255,252,247,.72);
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 2px;
  font-size: 14px;
}
.sider nav a:hover, .sider nav a.active {
  background: rgba(196,163,90,.14);
  color: #fffcf7;
}
.main { flex: 1; min-width: 0; }
.main.full { width: 100%; }
.top {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(246,243,238,.9);
  position: sticky;
  top: 0;
  z-index: 5;
}
.muted { color: var(--ink-muted); font-size: 12px; }
.userpill {
  border: 1px solid var(--line);
  background: var(--paper-elevated);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
}
.page { padding: 24px 28px 40px; }
.page-title {
  font-family: var(--font-serif);
  font-size: 28px;
  margin: 0 0 6px;
}
.page-sub { color: var(--ink-muted); margin: 0 0 18px; font-size: 14px; }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 14px;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
}
.stat-card .label { color: var(--ink-muted); font-size: 12px; }
.stat-card .value {
  font-family: var(--font-serif);
  font-size: 28px;
  margin-top: 6px;
}
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-muted); font-weight: 600; }
.btn, button, input[type=submit] {
  appearance: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fffcf7;
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}
.btn.ghost, button.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn.gold { background: var(--gold); border-color: var(--gold); color: #1c1916; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  font: inherit;
  background: #fff;
}
label { display: block; font-size: 13px; color: var(--ink-muted); margin: 10px 0 4px; }
.flash { padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; font-size: 13px; }
.flash.ok { background: #e8f2ec; color: var(--ok); }
.flash.err { background: #f8e8e5; color: var(--danger); }
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(900px 400px at 20% 0%, rgba(196,163,90,.18), transparent),
    var(--paper);
}
.login-card {
  width: min(420px, 92vw);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px;
}
.login-card h1 {
  font-family: var(--font-serif);
  font-size: 26px;
  margin: 0 0 6px;
}
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(196,163,90,.15);
  color: #8a6d2d;
  font-size: 12px;
}
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.grid2 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 14px; }
@media (max-width: 900px) {
  .sider { display: none; }
  .grid2 { grid-template-columns: 1fr; }
}