:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #1d4ed8;
  --accent-soft: #eef2ff;
  --up: #d92b2b;
  --down: #0f9d58;
  --warn: #b45309;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

h1, h2, h3 { margin: 0; font-weight: 600; }
h2 { font-size: 16px; margin-bottom: 12px; }

/* ── 登录 ── */
.mask {
  position: fixed; inset: 0; z-index: 50;
  background: linear-gradient(160deg, #eef2ff 0%, #f7f9fc 55%, #eef4ff 100%);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.login-card {
  width: 100%; max-width: 420px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 14px;
  padding: 28px; box-shadow: 0 18px 48px rgba(15, 23, 42, .10);
}
.login-brand { display: flex; gap: 14px; align-items: center; margin-bottom: 22px; }
.login-logo, .logo {
  width: 44px; height: 44px; flex: none; border-radius: 10px;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center; letter-spacing: .5px;
}
.login-brand h1 { font-size: 18px; }
.login-brand p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }

.login-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.ltab {
  flex: 1; padding: 8px; border: 1px solid var(--border); background: #fff;
  border-radius: 8px; cursor: pointer; color: var(--muted); font-size: 13px;
}
.ltab.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.seg { display: flex; gap: 8px; margin: 10px 0; }
.sbtn {
  flex: 1; padding: 6px; border: 1px solid var(--border); background: #fff;
  border-radius: 8px; cursor: pointer; color: var(--muted); font-size: 12px;
}
.sbtn.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.field { display: block; margin-bottom: 12px; }
.field > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; }
input, select, textarea {
  width: 100%; padding: 9px 11px; font: inherit; color: var(--text);
  border: 1px solid var(--border-strong); border-radius: 8px; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { resize: vertical; }
.row { display: flex; gap: 8px; }
.row input { flex: 1; }
.row .btn { flex: none; }

.btn {
  padding: 9px 16px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: #fff; color: var(--text); cursor: pointer; font-size: 13px;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { opacity: .9; color: #fff; }
.btn.ghost { background: #fff; }
.btn.wechat { background: #07c160; border-color: #07c160; color: #fff; }
.btn.wechat:hover { opacity: .9; color: #fff; }
.btn.block { width: 100%; margin-top: 6px; }
.btn.sm { padding: 5px 12px; font-size: 12px; }
.btn.danger { color: var(--up); border-color: #f3c2c2; }
.btn.danger:hover { color: var(--up); border-color: var(--up); }
.link { background: none; border: none; color: var(--accent); cursor: pointer; font-size: 12px; padding: 8px 0 0; }

.or { text-align: center; color: var(--muted); font-size: 12px; margin: 16px 0 10px; position: relative; }
.or::before, .or::after { content: ""; position: absolute; top: 50%; width: 42%; height: 1px; background: var(--border); }
.or::before { left: 0; } .or::after { right: 0; }

.err { color: var(--up); font-size: 12px; margin: 2px 0 8px; }
.err.center { text-align: center; margin-top: 10px; }
.msg { font-size: 12px; color: var(--muted); }
.msg.ok { color: var(--down); }
.msg.bad { color: var(--up); }

/* ── 主框架 ── */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 22px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; gap: 12px; align-items: center; }
.brand strong { font-size: 16px; display: block; }
.brand em { font-style: normal; font-size: 12px; color: var(--muted); }
.topright { display: flex; align-items: center; gap: 12px; }
.chip { font-size: 12px; color: var(--muted); background: #f1f5f9; padding: 4px 10px; border-radius: 20px; }

.tabs { display: flex; gap: 4px; padding: 0 22px; background: var(--panel); border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab {
  padding: 11px 16px; border: none; background: none; cursor: pointer;
  color: var(--muted); font-size: 13px; border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab.on { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { max-width: 1180px; margin: 0 auto; padding: 20px 22px 40px; }
.view { display: none; }
.view.on { display: block; }

.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 16px;
}
.hint { font-size: 12px; color: var(--muted); background: #f8fafc; border-left: 3px solid var(--border-strong); padding: 8px 12px; margin: 0 0 14px; border-radius: 0 6px 6px 0; }
.actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
.actions.bar { margin: 0 0 12px; }
.actions input, .actions select { width: auto; min-width: 150px; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 820px) { .grid3, .grid4 { grid-template-columns: 1fr; } }

.grid4.stat-grid { gap: 12px; }
.stat {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 16px;
}
.grid4 .stat { margin-bottom: 12px; }
.stat span { display: block; font-size: 12px; color: var(--muted); }
.stat b { font-size: 22px; font-weight: 600; }

/* ── 铁律 ── */
.rules { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.rules li { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.rules label { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.rules input { width: 16px; height: 16px; margin-top: 3px; flex: none; }
.rules b { display: block; font-size: 13px; }
.rules span { font-size: 12px; color: var(--muted); }

/* ── 表格 ── */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
table.tbl th, table.tbl td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
table.tbl th { color: var(--muted); font-weight: 500; font-size: 12px; background: #f8fafc; }
table.tbl tbody tr:hover { background: #f8fafc; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; background: #f1f5f9; color: var(--muted); }
.badge.long, .badge.win { background: #fdecec; color: var(--up); }
.badge.short, .badge.loss { background: #e7f6ee; color: var(--down); }
.badge.open { background: var(--accent-soft); color: var(--accent); }
.badge.holding { background: #fdecec; color: var(--up); }
.badge.ok { background: #e7f6ee; color: var(--down); }

/* ── 策略卡 ── */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; background: #fff; }
.card b { display: block; font-size: 13px; margin-bottom: 4px; }
.card span { font-size: 12px; color: var(--muted); }
.card em { display: block; font-style: normal; font-size: 11px; color: var(--warn); margin-top: 6px; }

.flow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.flow span { background: var(--accent-soft); color: var(--accent); padding: 6px 12px; border-radius: 6px; font-size: 13px; }
.flow i { color: var(--muted); font-style: normal; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags code { background: #f1f5f9; border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; font-size: 12px; color: #334155; }

.tbl td.ok { color: var(--down); }
.tbl td.warn { color: var(--warn); }
.tbl td.bad { color: var(--up); }

.preview {
  background: #0f172a; color: #e2e8f0; padding: 14px 16px; border-radius: 8px;
  overflow-x: auto; font-size: 12px; line-height: 1.7; margin-top: 12px; white-space: pre-wrap;
}

.foot {
  max-width: 1180px; margin: 0 auto; padding: 0 22px 30px;
  font-size: 12px; color: var(--muted); text-align: center;
}

.empty { color: var(--muted); font-size: 13px; padding: 18px 0; text-align: center; }