:root {
  --bg: #0b0d10;
  --bg-soft: #14181d;
  --surface: #1a1f25;
  --surface-hi: #212832;
  --border: #2b323b;
  --text: #e9edf2;
  --text-dim: #9aa3ad;
  --text-mute: #6b7480;
  --accent: #71e2c8;
  --accent-b: #5ab8ff;
  --accent-warn: #f5a524;
  --accent-danger: #ef5b5b;
  --accent-pos: #4ade80;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 28px rgba(0,0,0,.45);
  --radius: 14px;
  --radius-sm: 8px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { min-height: 100vh; }

a { color: var(--accent-b); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: var(--mono); }
.mono { font-variant-numeric: tabular-nums; }
.muted { color: var(--text-dim); }
.dim { color: var(--text-mute); }

/* layout */
.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 22px 80px;
}

header.site {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(11,13,16,0.78);
  border-bottom: 1px solid var(--border);
}
.nav {
  max-width: 1240px; margin: 0 auto;
  padding: 14px 22px;
  display: flex; align-items: center; gap: 22px;
  flex-wrap: wrap;
}
.nav .brand {
  font-weight: 700; font-size: 15px;
  color: var(--text); display: flex; align-items: center; gap: 10px;
}
.nav .brand .dot {
  width: 10px; height: 10px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(113, 226, 200, 0.15);
}
.nav .brand .tag {
  font-weight: 500; font-size: 11px;
  color: var(--text-mute);
  border: 1px solid var(--border); padding: 2px 7px; border-radius: 999px;
}
.nav ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 4px; flex-wrap: wrap;
  font-size: 13px;
}
.nav ul a {
  display: inline-block;
  padding: 6px 11px;
  color: var(--text-dim);
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s, transform .12s;
}
.nav ul a:hover {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
  text-decoration: none;
  transform: translateY(-1px);
}
.nav ul a.active {
  color: var(--text);
  background: var(--surface-hi);
  border-color: rgba(113,226,200,0.45);
  box-shadow: 0 0 0 1px rgba(113,226,200,0.15), 0 4px 14px rgba(0,0,0,0.35);
}

/* hero */
.hero { margin: 16px 0 28px; }
.hero h1 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800; letter-spacing: -0.02em;
  margin: 0 0 8px;
  line-height: 1.1;
}
.hero .sub {
  color: var(--text-dim); font-size: 15px; max-width: 780px;
}
.hero .meta {
  margin-top: 14px; display: flex; gap: 18px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--text-mute);
}
.hero .meta b { color: var(--text-dim); font-weight: 600; }

/* kpi grid */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 18px 0 28px;
}
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 18px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow);
}
.kpi .label {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-mute); margin-bottom: 8px;
}
.kpi .value {
  font-family: var(--mono); font-variant-numeric: tabular-nums;
  font-size: 28px; font-weight: 700;
  letter-spacing: -0.01em;
}
.kpi .delta {
  font-size: 12px; margin-top: 4px; color: var(--text-dim);
}
.kpi.accent { border-color: rgba(113,226,200,0.35); }
.kpi.accent .value { color: var(--accent); }

/* cards */
section.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 24px;
  margin: 18px 0;
  box-shadow: var(--shadow);
}
section.card > h2 {
  margin: 0 0 4px;
  font-size: 19px; letter-spacing: -0.01em;
}
section.card > .sub {
  color: var(--text-dim);
  font-size: 13.5px; margin: 0 0 18px;
}
section.card h3 { font-size: 15px; margin: 24px 0 8px; }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 820px) { .grid-2 { grid-template-columns: 1fr; } }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 820px) { .grid-3 { grid-template-columns: 1fr; } }

/* chart */
.chart {
  width: 100%; height: 380px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.chart.tall { height: 520px; }
.chart.short { height: 280px; }
.chart.xtall { height: 680px; }

/* table */
.table-wrap { overflow-x: auto; }
table.data {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}
table.data thead th {
  text-align: left; font-weight: 600;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
  background: var(--bg-soft);
  position: sticky; top: 0;
}
table.data tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(43,50,59,0.45);
  vertical-align: top;
}
table.data tbody tr:hover { background: rgba(255,255,255,0.02); }
table.data td.num, table.data th.num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
table.data td.path {
  font-family: var(--mono);
  color: var(--text-dim);
  max-width: 360px;
  word-break: break-all;
}
table.data td.title {
  max-width: 420px;
}

/* chips / badges */
.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11.5px; font-weight: 500;
  background: var(--surface-hi);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.chip.pos { color: var(--accent-pos); border-color: rgba(74,222,128,0.35); background: rgba(74,222,128,0.08); }
.chip.neg { color: var(--accent-danger); border-color: rgba(239,91,91,0.35); background: rgba(239,91,91,0.08); }
.chip.warn { color: var(--accent-warn); border-color: rgba(245,165,36,0.35); background: rgba(245,165,36,0.08); }
.chip.info { color: var(--accent-b); border-color: rgba(90,184,255,0.35); background: rgba(90,184,255,0.08); }

.callout {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(113,226,200,0.06);
  border-left: 3px solid var(--accent);
  color: var(--text);
  font-size: 13.5px;
  margin: 10px 0 18px;
}
.callout.warn { background: rgba(245,165,36,0.06); border-color: var(--accent-warn); }
.callout.danger { background: rgba(239,91,91,0.06); border-color: var(--accent-danger); }
.callout.info { background: rgba(90,184,255,0.06); border-color: var(--accent-b); }
.callout b { color: var(--text); }

/* sources module on landing */
.sources-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 22px;
  align-items: stretch;
  margin-top: 4px;
}
@media (max-width: 820px) { .sources-grid { grid-template-columns: 1fr; } }
.sources-grid .chart { height: 320px; cursor: pointer; }

.sources-flex {
  display: flex;
  gap: 22px;
  align-items: stretch;
  margin-top: 4px;
}
.sources-flex > #source-donut { flex: 1 1 55%; height: 320px; cursor: pointer; background: var(--bg-soft); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.sources-flex > .sources-list { flex: 1 1 45%; display: flex; flex-direction: column; }
@media (max-width: 820px) { .sources-flex { flex-direction: column; } }
.sources-footer-link { margin-top: 14px; text-align: right; font-size: 13px; }
.sources-footer-link a { color: var(--accent-b); }

.sources-list h3 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.sources-top { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.sources-top li {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color .15s, transform .12s, background .15s;
}
.sources-top li:hover {
  border-color: rgba(113,226,200,0.45);
  background: var(--surface);
  transform: translateX(2px);
}
.sources-top .rank { color: var(--text-mute); font-family: var(--mono); font-size: 11px; }
.sources-top .src { color: var(--text); font-size: 13.5px; line-height: 1.3; }
.sources-top .src .med { color: var(--text-mute); font-size: 11.5px; margin-left: 6px; font-family: var(--mono); }
.sources-top .v {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  color: var(--text-dim);
  text-align: right;
}
.sources-top .v b { color: var(--text); font-weight: 600; }
.sources-top .v .pct { color: var(--accent); margin-left: 8px; }

.ai-highlight {
  margin-top: 18px;
  padding: 14px 18px;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: linear-gradient(90deg, rgba(211,136,255,0.10), rgba(90,184,255,0.04));
  border: 1px solid rgba(211,136,255,0.30);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--text);
}
.ai-highlight .ai-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 4px 9px;
  background: rgba(211,136,255,0.18);
  color: #d388ff;
  border-radius: 999px;
  border: 1px solid rgba(211,136,255,0.4);
}
.ai-highlight .ai-text b { color: #d388ff; font-weight: 700; font-family: var(--mono); }
.ai-highlight a { margin-left: auto; font-size: 13px; white-space: nowrap; }

/* feedback map on landing */
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 16px 0 8px;
}
.feedback-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  display: flex; flex-direction: column;
  min-height: 150px;
  transition: transform .12s, border-color .12s;
}
.feedback-card { cursor: pointer; position: relative; }
.feedback-card::after {
  content: '→';
  position: absolute; top: 14px; right: 16px;
  color: var(--text-mute); font-size: 16px;
  transition: color .15s, transform .15s;
}
.feedback-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(113,226,200,0.2);
}
.feedback-card:hover::after { color: var(--accent); transform: translateX(3px); }
.feedback-card .num {
  font-family: var(--mono);
  font-size: 11px; color: var(--text-mute); letter-spacing: 0.1em;
}
.feedback-card .title {
  font-weight: 600; color: var(--text); font-size: 15px;
  margin-top: 4px;
}
.feedback-card .desc {
  color: var(--text-dim); font-size: 13px; margin-top: 6px; flex: 1;
}
.feedback-card .go {
  color: var(--accent-b); font-size: 12.5px; margin-top: 12px;
  align-self: flex-start;
}

/* lists */
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 6px 0; border-bottom: 1px dashed rgba(43,50,59,0.5); display: flex; justify-content: space-between; gap: 12px; }
ul.plain li:last-child { border-bottom: 0; }
ul.plain li .k { color: var(--text-dim); font-size: 13px; }
ul.plain li .v { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--text); font-size: 13px; }

/* footer */
footer.site {
  border-top: 1px solid var(--border);
  padding: 24px 22px;
  text-align: center;
  color: var(--text-mute);
  font-size: 12px;
}

/* utility */
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.spacer { height: 10px; }
.small { font-size: 12.5px; }
.right { text-align: right; }

/* persona cards */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin: 10px 0 8px;
}
.persona-card {
  background: linear-gradient(180deg, var(--surface-hi), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 18px;
  display: flex; flex-direction: column;
  min-height: 240px;
  position: relative;
  transition: border-color .15s, transform .12s, box-shadow .15s;
}
.persona-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-b));
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: .7;
}
.persona-card:hover { border-color: rgba(113,226,200,0.45); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,0.45); }
.persona-card .ptitle {
  font-size: 18px; font-weight: 700; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px; margin-bottom: 2px;
}
.persona-card .ptitle .emoji { font-size: 22px; }
.persona-card .psub {
  color: var(--text-dim); font-size: 13.5px; margin-bottom: 12px;
  line-height: 1.45;
}
.persona-card .pmetric {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 12px; font-size: 11.5px;
}
.persona-card .ptraits {
  flex: 1;
  font-size: 13px; color: var(--text); line-height: 1.55;
}
.persona-card .ptraits ul {
  margin: 0; padding-left: 18px;
  color: var(--text-dim);
}
.persona-card .ptraits ul li { margin-bottom: 3px; }
.persona-card .ptraits ul li b { color: var(--text); font-weight: 600; }
.persona-card .pfooter {
  margin-top: 12px; padding-top: 12px;
  border-top: 1px dashed rgba(43,50,59,0.6);
  font-size: 12.5px; color: var(--accent);
  line-height: 1.5;
}
.persona-card .pfooter::before { content: '↳ '; color: var(--text-mute); }

/* segmented control / tab group */
.seg-ctrl {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 6px 0 14px;
}
.seg-ctrl button {
  background: transparent;
  border: 0;
  color: var(--text-dim);
  font: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 7px;
  cursor: pointer;
  transition: color .15s, background .15s;
}
.seg-ctrl button:hover { color: var(--text); background: var(--surface); }
.seg-ctrl button.active {
  color: var(--text);
  background: var(--surface-hi);
  box-shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 2px 8px rgba(0,0,0,0.35);
  border: 1px solid rgba(113,226,200,0.35);
  padding: 6px 13px;
}