:root {
  --canvas: #f5f6f2;
  --surface: #ffffff;
  --surface-soft: #eef1eb;
  --ink: #18221c;
  --ink-muted: #667068;
  --line: #dce1da;
  --moss: #1c6b4a;
  --moss-soft: #dceee4;
  --blue: #246b9b;
  --blue-soft: #dcecf5;
  --amber: #8a5710;
  --amber-soft: #fff1cf;
  --red: #a3382b;
  --red-soft: #fae2dd;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: Georgia, "Noto Serif SC", serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; overflow-x: clip; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

button, select { font: inherit; }

a { color: inherit; }

.dashboard-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 38px 0 26px; }

.topbar { display: flex; justify-content: space-between; gap: 30px; align-items: flex-start; padding: 0 0 30px; }

.brand { min-width: 0; }
.eyebrow, .section-label { margin: 0 0 4px; color: var(--moss); font-size: 12px; font-weight: 700; letter-spacing: 0; }
.brand h1 { margin: 0; font-family: var(--font-display); font-size: 34px; line-height: 1.12; letter-spacing: 0; overflow-wrap: anywhere; }
.brand h1 span { color: var(--ink-muted); font-size: 25px; font-weight: 400; }
.brand a { display: inline-block; margin-top: 7px; color: var(--ink-muted); font-size: 13px; text-underline-offset: 3px; }
.brand a:hover { color: var(--moss); }

.controls { display: grid; justify-items: end; gap: 8px; min-width: 225px; }
.range-control { display: flex; align-items: center; gap: 8px; color: var(--ink-muted); font-size: 13px; }
.range-control select { min-width: 142px; padding: 8px 28px 8px 10px; border: 1px solid var(--line); border-radius: 4px; color: var(--ink); background: var(--surface); cursor: pointer; }
.range-control select:focus-visible { outline: 3px solid var(--blue-soft); outline-offset: 2px; }
.updated-at, .data-status { margin: 0; color: var(--ink-muted); font-size: 12px; }
.data-status:not(:empty) { color: var(--amber); }

.health-strip { display: flex; justify-content: space-between; gap: 24px; margin: 0 0 20px; padding: 15px 18px; border: 1px solid #e6c98e; border-radius: 6px; background: var(--amber-soft); }
.health-strip[hidden] { display: none; }
.health-strip__label { margin: 0 0 2px; color: var(--amber); font-size: 12px; font-weight: 700; }
.health-strip strong { font-size: 15px; }
.health-strip > p { max-width: 56%; margin: 5px 0 0; color: #765b32; font-size: 13px; text-align: right; overflow-wrap: anywhere; }

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.metric-card { display: grid; gap: 8px; min-height: 157px; padding: 18px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.metric-card__label { color: var(--ink-muted); font-size: 13px; font-weight: 700; }
.metric-card__value { font-family: var(--font-display); font-size: 36px; line-height: 1; font-variant-numeric: tabular-nums; }
.metric-card__delta { width: fit-content; padding: 2px 6px; border-radius: 3px; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.metric-card__delta--up { color: var(--moss); background: var(--moss-soft); }
.metric-card__delta--down { color: var(--red); background: var(--red-soft); }
.metric-card__delta--neutral { color: var(--ink-muted); background: var(--surface-soft); }
.metric-card__hint { align-self: end; color: var(--ink-muted); font-size: 12px; }
.metric-card--loading { display: grid; align-items: center; color: var(--ink-muted); background: repeating-linear-gradient(-45deg, var(--surface), var(--surface) 12px, var(--surface-soft) 12px, var(--surface-soft) 13px); }

.trend-panel, .insight-panel { border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.trend-panel { margin-top: 18px; padding: 22px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.panel-heading h2 { margin: 0; font-size: 18px; line-height: 1.25; letter-spacing: 0; overflow-wrap: anywhere; }
.panel-heading--compact { margin-bottom: 16px; }
.panel-heading--compact h2 { font-size: 16px; }
.panel-heading--compact > p { margin: 4px 0 0; color: var(--ink-muted); font-size: 12px; white-space: nowrap; }
.chart-key { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px; color: var(--ink-muted); font-size: 12px; }
.chart-key span::before { display: inline-block; width: 8px; height: 8px; margin: 0 5px 1px 0; border-radius: 50%; content: ""; vertical-align: middle; }
.chart-key__views::before { background: var(--blue); }
.chart-key__visitors::before { background: var(--moss); }

.trend-chart { position: relative; min-height: 270px; margin-top: 10px; }
.trend-chart svg { display: block; width: 100%; height: 270px; overflow: visible; }
.chart-grid { stroke: var(--line); stroke-dasharray: 3 4; }
.chart-axis { stroke: var(--line); }
.chart-line { fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; }
.chart-line--views { stroke: var(--blue); }
.chart-line--visitors { stroke: var(--moss); }
.chart-value, .chart-label { fill: var(--ink-muted); font-family: var(--font-body); font-size: 11px; }
.chart-hit { fill: transparent; cursor: crosshair; }
.chart-hit:focus { fill: var(--moss-soft); stroke: var(--moss); stroke-width: 2; outline: none; }
.trend-tooltip { position: absolute; top: 14px; z-index: 1; display: grid; gap: 2px; min-width: 150px; padding: 9px 11px; border: 1px solid var(--ink); border-radius: 4px; color: var(--surface); background: var(--ink); font-size: 12px; pointer-events: none; }
.trend-tooltip[hidden] { display: none; }
.trend-tooltip strong { font-size: 13px; }

.insight-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.insight-panel { min-width: 0; padding: 20px; }
.rank-list { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.rank-list li { display: grid; grid-template-columns: minmax(0, 1fr) 92px auto; gap: 9px; align-items: center; min-width: 0; }
.rank-list__name { overflow: hidden; font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.rank-list__bar { display: block; height: 6px; overflow: hidden; border-radius: 3px; background: var(--surface-soft); }
.rank-list__bar i { display: block; height: 100%; border-radius: inherit; background: var(--moss); }
.rank-list strong { min-width: 34px; font-size: 12px; font-variant-numeric: tabular-nums; text-align: right; }
.empty-state { margin: 18px 0; color: var(--ink-muted); font-size: 13px; }

footer { display: flex; justify-content: space-between; gap: 16px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-muted); font-size: 12px; }
footer a { color: var(--moss); font-weight: 700; text-underline-offset: 3px; white-space: nowrap; }

@media (max-width: 780px) {
  .dashboard-shell { width: min(100% - 28px, 600px); padding-top: 24px; }
  .topbar { display: grid; gap: 20px; padding-bottom: 22px; }
  .controls { justify-items: start; min-width: 0; }
  .health-strip, footer { display: grid; gap: 8px; }
  .health-strip > p { max-width: none; margin: 0; text-align: left; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-card { min-height: 142px; padding: 15px; }
  .metric-card__value { font-size: 30px; }
  .insight-grid { grid-template-columns: 1fr; }
  .chart-key { justify-content: flex-start; }
}

@media (max-width: 390px) {
  .metric-grid { grid-template-columns: 1fr; }
  .panel-heading { display: grid; gap: 10px; }
  .panel-heading--compact > p { margin: 0; white-space: normal; }
  .rank-list li { grid-template-columns: minmax(0, 1fr) 72px auto; }
}