:root {
  --bg: #0f1420; --panel: #171e2e; --panel2: #1d2538; --line: #2a3450;
  --tx: #e8ecf4; --muted: #8a94ab;
  --up: #e03131; --dn: #0ca678;          /* 中国习惯：涨红跌绿 */
  --accent: #4c8dff;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--tx); font: 14px/1.6 "Microsoft YaHei", system-ui, sans-serif; }
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 12px; }

/* 当前持仓横幅（交易记录页顶部） */
.pos-banner {
  margin-bottom: 12px; padding: 12px 16px; border-radius: 10px;
  background: var(--panel2); border: 1px solid var(--line);
  font-size: 14px; color: var(--muted);
}
.pos-banner b { color: var(--tx); }
.pos-banner.up { border-color: var(--up); background: rgba(224,49,49,0.10); }
.pos-banner.dn { border-color: var(--dn); background: rgba(12,166,120,0.10); }

/* 交易记录表格里的「进行中」持仓行高亮 */
.row-open { background: rgba(255,197,61,0.10) !important; }
.row-open td { border-top: 2px solid var(--warn, #ffc53d); }
.row-open b { color: var(--tx); }
.pos-banner.up b { color: var(--up); }
.pos-banner.dn b { color: var(--dn); }

/* 登录 */
.login-wrap {
  display: flex; justify-content: center; align-items: center; min-height: 100vh;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(76,141,255,.18), transparent 60%),
    radial-gradient(700px 500px at 90% 110%, rgba(12,166,120,.10), transparent 60%),
    var(--bg);
}
.login-card {
  position: relative; width: 420px; padding: 48px 44px 40px;
  background: linear-gradient(160deg, #18213a, #131a2c);
  border: 1px solid #2c3a5e; border-radius: 16px;
  box-shadow: 0 0 0 1px rgba(76,141,255,.10), 0 18px 60px rgba(0,0,0,.55), inset 0 0 30px rgba(76,141,255,.06);
}
.login-card::before {
  content: ""; position: absolute; left: 44px; right: 44px; top: 0; height: 2px;
  background: linear-gradient(90deg, transparent, #4c8dff, #7ee0ff, transparent);
  box-shadow: 0 0 12px #4c8dff;
}
.login-card h1 {
  font-size: 30px; font-weight: 800; letter-spacing: 3px; margin-bottom: 28px; text-align: center;
  background: linear-gradient(90deg, #cfe2ff, #7ee0ff 60%, #4c8dff);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.login-card label {
  display: block; font-size: 15px; color: #c4cde2; margin-bottom: 18px; letter-spacing: .5px;
}
.login-card input {
  width: 100%; margin-top: 8px; padding: 13px 14px; border-radius: 9px;
  border: 1px solid #33415f; background: #0f1626; color: #f2f5fb; font-size: 16px;
  transition: border-color .15s, box-shadow .15s;
}
.login-card input::placeholder { color: #5d6b8a; }
.login-card input:focus {
  outline: none; border-color: #4c8dff;
  box-shadow: 0 0 0 3px rgba(76,141,255,.18), 0 0 14px rgba(76,141,255,.25);
}
.login-card button {
  width: 100%; margin-top: 8px; padding: 14px; border: none; border-radius: 9px;
  font-size: 17px; font-weight: 700; letter-spacing: 4px; color: #fff; cursor: pointer;
  background: linear-gradient(90deg, #3f7bff, #4c8dff 60%, #6fd6ff);
  box-shadow: 0 8px 24px rgba(76,141,255,.35);
  transition: transform .08s, box-shadow .15s, filter .15s;
}
.login-card button:hover { filter: brightness(1.08); box-shadow: 0 10px 30px rgba(76,141,255,.5); }
.login-card button:active { transform: translateY(1px); }
.row input, .row select {
  width: 100%; margin-top: 4px; padding: 9px 12px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--panel2); color: var(--tx); font-size: 14px;
}
.row button, .pager button, .ghost, .tbl button {
  background: var(--accent); color: #fff; border: none; border-radius: 6px;
  padding: 9px 18px; font-size: 14px; cursor: pointer;
}
.ghost { background: transparent; border: 1px solid var(--line); color: var(--muted); padding: 5px 12px; }
.err { color: var(--up); font-size: 13px; margin-bottom: 10px; text-align: center; }

/* 头部/导航 */
header { display: flex; justify-content: space-between; align-items: center; padding: 14px 24px; border-bottom: 1px solid var(--line); }
.brand { font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.tag { font-size: 11px; color: var(--accent); border: 1px solid var(--accent); border-radius: 4px; padding: 1px 6px; margin-left: 8px; }
.hd-right { display: flex; gap: 12px; align-items: center; color: var(--muted); }
nav { display: flex; gap: 4px; padding: 10px 24px 0; }
nav button { background: transparent; border: none; color: var(--muted); font-size: 14px; padding: 8px 18px; cursor: pointer; border-bottom: 2px solid transparent; }
nav button.active { color: var(--tx); border-bottom-color: var(--accent); }
section { padding: 18px 24px 40px; }

/* 卡片 */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.card .k { color: var(--muted); font-size: 12px; }
.card .v { font-size: 24px; font-weight: 700; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.card .s { color: var(--muted); font-size: 12px; }
.v.up { color: var(--up); } .v.dn { color: var(--dn); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin-top: 14px; }
.panel-title { font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.row { display: flex; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.row input, .row select { width: auto; flex: 1; min-width: 140px; margin-top: 0; }
.row button { flex: none; }
#status-line { line-height: 1.9; }
.policy { line-height: 2; }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tbl th { color: var(--muted); font-weight: 400; font-size: 12px; }
.tbl button { padding: 3px 10px; font-size: 12px; background: var(--panel2); border: 1px solid var(--line); }
.pager { display: flex; gap: 10px; margin-top: 12px; justify-content: flex-end; }
.side-L { color: var(--up); font-weight: 600; }
.side-S { color: var(--dn); font-weight: 600; }
.pnl-pos { color: var(--up); }
.pnl-neg { color: var(--dn); }

/* 弹窗 */
#modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; justify-content: center; align-items: center; z-index: 50; }
.modal-card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; width: min(1100px, 94vw); max-height: 92vh; overflow: auto; padding: 16px 20px; }
.modal-hd { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-weight: 600; }
.modal-hd button { background: transparent; border: none; color: var(--muted); font-size: 16px; cursor: pointer; }
.snap-h { font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.kline-tg { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 4px 0 10px; }
.kline-tg button { background: var(--panel2); border: 1px solid var(--line); color: var(--muted); padding: 5px 12px; font-size: 12px; border-radius: 6px; cursor: pointer; transition: all .12s; }
.kline-tg button.on { color: #fff; border-color: var(--accent); background: rgba(76,141,255,.18); }
.kline-svg { width: 100%; overflow: hidden; border-radius: 8px; }