:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --border: #e3e8ef;
  --border-strong: #cfd6e0;
  --text: #1f2733;
  --text-2: #5b6675;
  --text-3: #8b95a5;
  --accent: #1a5fd0;
  --accent-soft: #e8f0fe;
  --up: #d93a34;
  --down: #16a34a;
  --warn: #b26a00;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .04);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

a { color: var(--accent); text-decoration: none; }

/* ---------- 布局 ---------- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 208px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 18px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand { padding: 4px 10px 16px; }
.brand h1 { font-size: 16px; margin: 0; letter-spacing: .5px; }
.brand .sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.nav-item {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--text-2);
  cursor: pointer;
  margin-bottom: 2px;
  font-size: 14px;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-sep { height: 1px; background: var(--border); margin: 12px 8px; }
.nav-note { font-size: 12px; color: var(--text-3); padding: 8px 12px; line-height: 1.5; }

.main { flex: 1; min-width: 0; padding: 18px 22px 40px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.topbar h2 { font-size: 18px; margin: 0; }
.spacer { flex: 1; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-2);
}
.badge.live { background: #eef7f0; border-color: #cfe8d8; color: #1f7a45; }
.badge.ifind { background: #fdf1e3; border-color: #f3ddbd; color: #8a5a10; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.card > h3 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card > h3 .tip { font-weight: 400; font-size: 12px; color: var(--text-3); }
.card > h3 .spacer { flex: 1; }

/* 趋势雷达：信号卡 */
.sig {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--panel-2);
}
.sig.risk { border-left-color: var(--up); background: #fff7f6; }
.sig-head { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.sig-body { font-size: 12.5px; color: var(--text-2); line-height: 1.65; margin-top: 6px; }
.sig-foot { margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--border); }
.chip.risk { background: #fdeceb; border-color: #f0c2c0; color: var(--up); }
.score {
  display: inline-block; min-width: 34px; text-align: center;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 6px; padding: 1px 6px; font-variant-numeric: tabular-nums;
}

.grid { display: grid; gap: 12px; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1100px) { .grid.c3, .grid.c4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } .sidebar { display: none; } }

/* ---------- 表 ---------- */
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
th {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
  text-align: right;
  position: sticky;
  top: 0;
  background: var(--panel);
  z-index: 1;
}
th:first-child, td:first-child { text-align: left; }
tbody tr:hover { background: var(--panel-2); }
.table-wrap { max-height: 62vh; overflow: auto; }

.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--text-2); }
.mono { font-variant-numeric: tabular-nums; }

/* ---------- 表单控件 ---------- */
input[type=text], input[type=password], input[type=number], select {
  padding: 6px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26, 95, 208, .12); }
.btn {
  padding: 6px 12px;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.btn:hover { background: var(--panel-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.sm { padding: 3px 8px; font-size: 12px; }
.btn.danger { color: var(--up); border-color: #f0c2c0; }
.chip {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  cursor: pointer;
  font-size: 13px;
  background: #fff;
  margin: 0 6px 6px 0;
}
.chip.on { background: var(--accent-soft); border-color: #b8cdf5; color: var(--accent); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--text-3); font-size: 12px; }

/* ---------- 指标卡 ---------- */
.metric { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: var(--panel-2); }
.metric .k { font-size: 12px; color: var(--text-3); }
.metric .v { font-size: 18px; font-weight: 600; margin-top: 2px; font-variant-numeric: tabular-nums; }
.metric .n { font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* ---------- 报告 ---------- */
.report-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--panel);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.report-item .meta { flex: 1; min-width: 220px; }
.report-item .ttl { font-weight: 600; }
.report-item .sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.preview-box { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #fff; }
.preview-box iframe { width: 100%; height: 70vh; border: 0; display: block; }

.empty { padding: 30px; text-align: center; color: var(--text-3); }
.alert-hit { border-left: 3px solid var(--up); background: #fff6f5; }

/* ---------- 登录页 ---------- */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg); }
.login-box { width: 340px; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); padding: 26px; }
.login-box h2 { margin: 0 0 4px; font-size: 18px; }
.login-box p { margin: 0 0 16px; font-size: 12px; color: var(--text-3); }
.login-box input { width: 100%; margin-bottom: 10px; }
.login-box .btn { width: 100%; }
.err { color: var(--up); font-size: 12px; min-height: 18px; }