:root {
  --bg: #1a2f40;
  --card: #213749;
  --card2: #1c3242;
  --ink: #eaf2fa;
  --muted: #93a6b6;
  --line: rgba(255, 255, 255, 0.07);
  --accent: #5fd0d6;
  --accent-dim: rgba(95, 208, 214, 0.16);
  --up: #5fd6a2;
  --down: #e6a35f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, #2a4257 0%, #1a2f40 55%, #142634 100%);
  color: var(--ink);
  min-height: 100vh;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(20, 38, 52, 0.85); backdrop-filter: blur(8px); z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.brand strong { color: var(--accent); font-weight: 600; }
.brand .mark { width: 26px; height: 26px; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.asof { color: var(--muted); font-size: 12px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 22px 60px; }
.lede { color: var(--muted); }

.btn { background: var(--accent); color: #06222a; border: 0; border-radius: 8px; padding: 12px 20px; font-size: 15px; font-weight: 700; cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; padding: 7px 13px; cursor: pointer; font-size: 13px; }
.btn-ghost:hover { color: var(--ink); border-color: var(--accent); }

/* KPI strip */
.kpi-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: linear-gradient(180deg, var(--card) 0%, var(--card2) 100%); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.kpi-value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.kpi-label { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 12px; margin-top: 6px; }
.delta { font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.delta.up { color: var(--up); }
.delta.down { color: var(--down); }

/* Cards / panels */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.hero { margin-bottom: 16px; }
.hero-total { color: var(--muted); font-size: 13px; margin: -2px 0 8px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.panel-head h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0; }
.drill { color: var(--accent); font-size: 12px; text-decoration: none; }
.drill:hover { text-decoration: underline; }
.panel dl { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; margin: 8px 0 0; }
.panel dt { color: var(--muted); font-size: 13px; }
.panel dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; font-size: 13px; }

/* Charts */
.chart { width: 100%; display: block; }
.hero .chart { height: 170px; }
.panel .chart { height: 46px; margin: 2px 0 10px; }
.chart-area { fill: var(--accent-dim); }
.chart-line, .spark-line { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.chart-bar { fill: var(--accent); opacity: 0.75; }

/* Acquisition proportion bar */
.acq .stackbar { display: flex; height: 16px; border-radius: 8px; overflow: hidden; margin: 4px 0 12px; background: rgba(255,255,255,0.05); }
.acq .seg { min-width: 3px; }
.seg-paid { background: var(--accent); }
.seg-trial { background: var(--up); }
.seg-coupon { background: var(--down); }
.seg-empty { background: transparent; }
.legend dt { display: flex; align-items: center; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 7px; }
.dot-paid { background: var(--accent); }
.dot-trial { background: var(--up); }
.dot-coupon { background: var(--down); }

/* Toggle */
.toggle { display: flex; gap: 4px; }
.toggle-btn { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px; font-size: 12px; cursor: pointer; }
.toggle-btn.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

/* Detail tables */
#detail h2 { font-size: 18px; margin: 14px 0 16px; }
#detail h3.sub { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 22px 0 8px; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line); position: sticky; top: 58px; background: var(--bg); }
table.data td { padding: 7px 10px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
table.data tr:hover td { background: rgba(255, 255, 255, 0.03); }
.muted { color: var(--muted); }
.status { color: var(--muted); font-size: 13px; margin-top: 16px; }