:root {
  --bg: #f3efe6;
  --ink: #1c1917;
  --muted: #78716c;
  --card: #fffcf7;
  --line: #e7e0d5;
  --accent: #0f766e;
  --accent-ink: #ecfdf5;
  --danger: #b91c1c;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.06);
  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(15, 118, 110, 0.12), transparent 40%),
    linear-gradient(180deg, #f7f3ea, var(--bg));
  color: var(--ink);
  min-height: 100vh;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.2em; }

.login-panel {
  width: min(400px, calc(100% - 2rem));
  margin: 12vh auto;
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.login-panel h1 { margin: 0 0 0.25rem; letter-spacing: 0.02em; }
.login-panel form { display: grid; gap: 1rem; margin-top: 1.5rem; }
label { display: grid; gap: 0.4rem; font-size: 0.9rem; }
input, select, textarea, button {
  font: inherit;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}
textarea { min-height: 80px; resize: vertical; }
button {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  cursor: pointer;
}
button.ghost, button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 252, 247, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar nav { display: flex; flex-wrap: wrap; gap: 0.4rem; flex: 1; }
.topbar nav button {
  background: transparent;
  color: var(--muted);
  border: 0;
  padding: 0.45rem 0.7rem;
}
.topbar nav button.active { color: var(--accent); font-weight: 600; }

.main { width: min(1100px, calc(100% - 2rem)); margin: 1.5rem auto 3rem; }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.panel h2 { margin: 0 0 0.75rem; font-size: 1.15rem; }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: end; margin-bottom: 0.75rem; }
.row > * { flex: 1; min-width: 160px; }
.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.65rem 0.4rem;
  vertical-align: top;
}
.actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: #ecfdf5;
  color: var(--accent);
  font-size: 0.75rem;
}
.badge.warn { background: #fff7ed; color: #c2410c; }
.hint {
  background: #fafaf9;
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
code { font-family: ui-monospace, Consolas, monospace; font-size: 0.85em; }