:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2329;
  --muted: #86909c;
  --line: #e5e6eb;
  --brand: #4080ff;
  --brand-dark: #2b5fd9;
  --ok: #00b42a;
  --warn: #ff7d00;
  --danger: #f53f3f;
  --radius: 8px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--card); border-bottom: 1px solid var(--line);
  padding: 0 24px; height: 52px; display: flex; align-items: center; gap: 16px;
  position: sticky; top: 0; z-index: 10;
}
.topbar .logo { font-size: 16px; font-weight: 600; }
.topbar .logo span { color: var(--brand); }
.topbar .spacer { flex: 1; }

.container { max-width: 960px; margin: 0 auto; padding: 24px 16px 60px; }
.container.wide { max-width: 1200px; }

.search-box { display: flex; gap: 10px; margin-bottom: 8px; }
.search-box input {
  flex: 1; height: 42px; border: 2px solid var(--brand); border-radius: 8px;
  padding: 0 14px; font-size: 15px; outline: none;
}
.search-box button {
  height: 42px; padding: 0 26px; background: var(--brand); color: #fff;
  border: none; border-radius: 8px; font-size: 15px; cursor: pointer;
}
.search-box button:hover { background: var(--brand-dark); }

.filter-row {
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px; margin: 10px 0;
}
.filter-row select, .filter-row input {
  min-width: 0; height: 36px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--card); padding: 0 10px; color: var(--text); outline: none;
}
.filter-row select:focus, .filter-row input:focus { border-color: var(--brand); }
.quick-keywords { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 10px; }
.quick-keywords button {
  border: 1px solid var(--line); background: var(--card); border-radius: 4px;
  padding: 4px 10px; color: var(--muted); cursor: pointer;
}
.quick-keywords button:hover { border-color: var(--brand); color: var(--brand); }

.meta-line { color: var(--muted); font-size: 12px; margin-bottom: 20px; }
.meta-line b { color: var(--text); }

.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tabs button {
  border: 1px solid var(--line); background: var(--card); border-radius: 16px;
  padding: 5px 16px; cursor: pointer; color: var(--muted); font-size: 13px;
}
.tabs button.on { background: var(--brand); border-color: var(--brand); color: #fff; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; margin-bottom: 12px;
}
.card h3 { font-size: 15px; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.card .desc { color: var(--muted); font-size: 13px; line-height: 1.6; }
.row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; font-size: 13px; }
.row .k { color: var(--muted); }

.tag {
  display: inline-block; padding: 1px 8px; border-radius: 4px; font-size: 12px;
  background: #f2f3f5; color: var(--muted);
}
.tag.ok   { background: #e8ffea; color: var(--ok); }
.tag.warn { background: #fff7e8; color: var(--warn); }
.tag.danger { background: #ffece8; color: var(--danger); }
.tag.brand { background: #e8f3ff; color: var(--brand); }

.price { color: #f53f3f; font-weight: 600; font-size: 16px; }
.price small { color: var(--muted); font-weight: 400; text-decoration: line-through; margin-left: 6px; }

.pager { display: flex; gap: 8px; justify-content: center; margin-top: 20px; }
.pager button {
  border: 1px solid var(--line); background: var(--card); border-radius: 6px;
  padding: 6px 14px; cursor: pointer;
}
.pager button:disabled { opacity: .4; cursor: default; }
.empty { text-align: center; color: var(--muted); padding: 60px 0; }

/* ---- admin ---- */
.login-wrap { max-width: 360px; margin: 90px auto; }
.login-wrap input {
  width: 100%; height: 40px; border: 1px solid var(--line); border-radius: 8px;
  padding: 0 12px; margin: 12px 0; outline: none;
}
.login-wrap button { width: 100%; }

.btn {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 6px; padding: 6px 14px; cursor: pointer; font-size: 13px;
}
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.danger { color: var(--danger); }
.btn.small { padding: 3px 10px; font-size: 12px; }
.btn:hover { filter: brightness(.96); }

.admin-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.admin-tabs button {
  border: none; background: none; padding: 10px 18px; cursor: pointer;
  font-size: 14px; color: var(--muted); border-bottom: 2px solid transparent;
}
.admin-tabs button.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }

table.tbl { width: 100%; border-collapse: collapse; background: var(--card); }
table.tbl th, table.tbl td {
  border-bottom: 1px solid var(--line); padding: 9px 10px; text-align: left;
  font-size: 13px; vertical-align: top;
}
table.tbl th { color: var(--muted); font-weight: 500; background: #fafbfc; }
table.tbl td .sub { color: var(--muted); font-size: 12px; }

.field { margin-bottom: 12px; }
.field label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 6px;
  padding: 7px 10px; font-size: 13px; outline: none; font-family: inherit;
}
.field textarea { min-height: 64px; }
.field input:focus, .field textarea:focus { border-color: var(--brand); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 16px; }

.toolbar { display: flex; gap: 8px; margin: 10px 0 14px; flex-wrap: wrap; align-items: center; }
.section-title { font-size: 15px; font-weight: 600; margin: 22px 0 10px; }
.hint { color: var(--muted); font-size: 12px; line-height: 1.7; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.toast {
  position: fixed; top: 66px; right: 20px; z-index: 99;
  background: #1f2329; color: #fff; border-radius: 8px; padding: 10px 16px;
  font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,.15); max-width: 420px;
}
.toast.err { background: var(--danger); }

@media (max-width: 720px) {
  .topbar { padding: 0 14px; }
  .container { padding: 16px 12px 40px; }
  .filter-row { grid-template-columns: 1fr 1fr; }
  .filter-row select:last-child { grid-column: 1 / -1; }
  .grid2, .grid3 { grid-template-columns: 1fr; }
  table.tbl { display: block; overflow-x: auto; white-space: nowrap; }
}