:root {
  --bg: #0b0d10;
  --bg2: #12161b;
  --panel: #151a20;
  --line: #232a33;
  --fg: #e6edf3;
  --fg2: #9aa7b4;
  --fg3: #6b7785;
  --accent: #ff7a45;
  --accent2: #4cc2ff;
  --good: #3ddc97;
  --bad: #ff5c72;
  --warn: #f5c451;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 15% -10%, #1a2230 0%, var(--bg) 55%) no-repeat, var(--bg);
  color: var(--fg);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.topbar { border-bottom: 1px solid var(--line); background: rgba(11,13,16,.75); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 20; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 30px; line-height: 1; filter: drop-shadow(0 2px 8px rgba(255,122,69,.35)); }
h1 { font-size: 19px; margin: 0; letter-spacing: .2px; }
.sub { margin: 2px 0 0; font-size: 12.5px; color: var(--fg2); }
.meta { font-size: 12px; color: var(--fg2); text-align: right; line-height: 1.7; }
.meta b { color: var(--fg); font-weight: 600; }
.meta .stale { color: var(--warn); }

/* ---------- layout ---------- */
main.wrap { padding: 24px 20px 60px; }
.panel { background: linear-gradient(180deg, var(--panel), var(--bg2)); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; margin: 18px 0; }
.panel h2 { font-size: 15.5px; margin: 0 0 14px; font-weight: 600; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.hint { font-size: 12px; color: var(--fg3); font-weight: 400; }

/* ---------- kpi cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-top: 6px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.card .k { font-size: 11.5px; color: var(--fg3); letter-spacing: .4px; text-transform: uppercase; }
.card .v { font-size: 24px; font-weight: 650; margin-top: 6px; font-variant-numeric: tabular-nums; }
.card .v small { font-size: 13px; color: var(--fg2); font-weight: 500; margin-left: 3px; }
.card .s { font-size: 12px; color: var(--fg2); margin-top: 3px; }

/* ---------- picker ---------- */
.presets { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.preset { background: #1b2028; color: var(--fg); border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px; font-size: 13px; cursor: pointer; transition: .15s; }
.preset:hover { border-color: #37414d; background: #202732; }
.preset.on { border-color: var(--accent); color: #ffd7c7; background: rgba(255,122,69,.12); }
.weights { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 10px 22px; margin-bottom: 16px; }
.wrow { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.wrow label { width: 92px; color: var(--fg2); }
.wrow input[type=range] { flex: 1; accent-color: var(--accent); }
.wrow output { width: 34px; text-align: right; font-variant-numeric: tabular-nums; color: var(--fg); font-family: var(--mono); font-size: 12px; }
.picks { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px; }
.pick { border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #12171d; position: relative; }
.pick.top { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(255,122,69,.25), 0 8px 24px -12px rgba(255,122,69,.5); }
.pick .rank { position: absolute; top: 12px; right: 14px; font: 600 12px var(--mono); color: var(--fg3); }
.pick .nm { font-size: 16px; font-weight: 650; }
.pick .sc { font: 600 13px var(--mono); color: var(--accent); margin-left: 8px; }
.pick .why { font-size: 12.5px; color: var(--fg2); margin-top: 8px; }
.pick .why b { color: var(--fg); font-weight: 600; }

/* ---------- toolbar / table ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
input[type=search], select {
  background: #10151a; color: var(--fg); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 11px; font-size: 13px; font-family: inherit; outline: none;
}
input[type=search] { min-width: 240px; }
input[type=search]:focus, select:focus { border-color: #3b4757; }
.chk { font-size: 13px; color: var(--fg2); display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }
.chk input { accent-color: var(--accent); }
.count { font-size: 12px; color: var(--fg3); margin-left: auto; }
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { padding: 9px 12px; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--line); }
th { font-size: 12px; color: var(--fg2); font-weight: 600; background: #10151a; position: sticky; top: 0; cursor: pointer; user-select: none; }
th:hover { color: var(--fg); }
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--mono); }
tbody tr:hover { background: #171d24; }
tbody tr.open { background: #171d24; }
td .meter { display: block; min-width: 64px; }
td .meter b { display: block; font-weight: 400; line-height: 1.35; }
td .meter i { display: block; height: 3px; margin: 2px 0 1px auto; border-radius: 2px;
  background: linear-gradient(90deg, rgba(255,122,69,.55), rgba(255,77,109,.75)); }
.badge { display: inline-block; font-size: 11px; padding: 2px 7px; border-radius: 999px; border: 1px solid var(--line); color: var(--fg2); }
.badge.ok { color: var(--good); border-color: rgba(61,220,151,.35); background: rgba(61,220,151,.08); }
.badge.fail { color: var(--bad); border-color: rgba(255,92,114,.35); background: rgba(255,92,114,.08); }
.badge.warn { color: var(--warn); border-color: rgba(245,196,81,.35); background: rgba(245,196,81,.08); }
.detail td { background: #0f141a; white-space: normal; }
.detail .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px 18px; font-size: 12.5px; color: var(--fg2); }
.detail .grid b { color: var(--fg); font-weight: 600; }
.detail pre { margin: 10px 0 0; padding: 10px; background: #0a0e12; border: 1px solid var(--line); border-radius: 8px; font-size: 11.5px; color: #c9d4de; overflow-x: auto; max-height: 220px; }
.detail .note { margin-top: 8px; color: var(--fg2); font-size: 12.5px; }
.legend { margin-top: 10px; font-size: 12px; color: var(--fg3); }

/* ---------- charts ---------- */
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 18px; }
.chart { margin: 0; }
.chart figcaption { font-size: 12.5px; color: var(--fg2); margin-bottom: 8px; }
.chart svg { width: 100%; height: auto; overflow: visible; }
.chart .tick { fill: var(--fg3); font-size: 10px; font-family: var(--mono); }
.chart .lab { fill: var(--fg2); font-size: 10.5px; }
.chart .grid-line { stroke: #1d242c; stroke-width: 1; }

/* ---------- insights / history / method ---------- */
.insights { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.insight { border-left: 3px solid var(--accent); background: #12171d; border-radius: 0 10px 10px 0; padding: 12px 14px; font-size: 13px; color: var(--fg2); }
.insight b { color: var(--fg); }
.insight .t { display: block; font-weight: 650; color: var(--fg); margin-bottom: 5px; font-size: 13.5px; }
.method { font-size: 13px; color: var(--fg2); line-height: 1.75; }
.method code { font-family: var(--mono); font-size: 12px; background: #0e1318; border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; color: #d5dee6; }
.method ul { margin: 8px 0; padding-left: 22px; }
.method li { margin: 4px 0; }
#history table { font-size: 12.5px; }
footer { margin-top: 26px; font-size: 12px; color: var(--fg3); text-align: center; }
.spark { stroke: var(--accent2); fill: none; stroke-width: 1.6; }

@media (max-width: 720px) {
  .topbar .wrap { flex-direction: column; align-items: flex-start; gap: 8px; }
  .meta { text-align: left; }
  .charts { grid-template-columns: 1fr; }
}

/* ---------- scenario cards ---------- */
.scenarios { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.scn { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: #12171d; }
.scn h3 { margin: 0 0 4px; font-size: 14px; font-weight: 650; }
.scn .who { font-size: 12px; color: var(--fg3); margin-bottom: 10px; }
.scn .pick { font-weight: 650; color: var(--accent); font-size: 13.5px; }
.scn p { margin: 8px 0 0; font-size: 12.5px; color: var(--fg2); }
.scn .alt { margin-top: 8px; font-size: 12.5px; color: var(--fg2); }
.scn .alt b { color: var(--fg); }

.demo-banner { border: 1px solid rgba(245,196,81,.4); background: rgba(245,196,81,.08); color: #f0d9a4;
  border-radius: 12px; padding: 12px 16px; margin: 18px 0 4px; font-size: 13px; }
.demo-banner b { color: var(--warn); }

tbody tr.est td { opacity: .55; }
tbody tr.est:hover td { opacity: .8; }

/* ---------- month-over-month ---------- */
.cmp-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 14px; }
.cmp-card { border: 1px solid var(--line); border-radius: 10px; background: #12171d; padding: 10px 12px; }
.cmp-card .t { font-size: 11.5px; color: var(--fg3); letter-spacing: .3px; }
.cmp-card .n { font-size: 18px; font-weight: 650; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.cmp-card .d { font-size: 11.5px; color: var(--fg2); }
.cmp-card .up { color: var(--bad); }
.cmp-card .down { color: var(--good); }
.cmp-card .same { color: var(--fg3); }
td.delta { font-family: var(--mono); font-size: 12.5px; }
td.delta .abs { color: var(--fg3); font-size: 11px; display: block; }
.d-up { color: var(--bad); }
.d-down { color: var(--good); }
.d-same { color: var(--fg3); }
.cmp-empty { border: 1px dashed var(--line); border-radius: 12px; padding: 18px; color: var(--fg2); font-size: 13px; background: #0f141a; }
.cmp-empty b { color: var(--fg); }