:root {
  --background: #fff;
  --text: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --soft: #f7f9fc;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  color-scheme: light;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--background); color: var(--text); }
button, input, select { font: inherit; }
.topbar { min-height: 92px; padding: 22px max(28px, calc((100vw - 1280px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); background: #fff; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(24px, 3vw, 34px); letter-spacing: -.04em; }
h2 { font-size: 20px; }
.eyebrow, .section-title > p { margin-bottom: 6px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .1em; }
.version-box { min-width: 260px; padding: 10px 14px; border: 1px solid #bfdbfe; border-radius: 10px; background: var(--accent-soft); }
.version-box span { display: block; color: var(--muted); font-size: 12px; }
.version-box code { display: block; margin-top: 4px; color: var(--accent); overflow-wrap: anywhere; }
.page-shell { max-width: 1280px; margin: 0 auto; padding: 28px; }
.panel { border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: 0 8px 24px rgba(15, 23, 42, .04); }
.notice { padding: 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px solid #bfdbfe; border-radius: 14px; background: var(--accent-soft); }
.notice p { margin-top: 5px; color: var(--muted); }
.notice.error { border-color: #fecaca; background: #fef2f2; }
.button { border: 0; border-radius: 9px; padding: 10px 16px; background: var(--accent); color: white; text-decoration: none; cursor: pointer; font-weight: 700; }
.button.secondary { border: 1px solid #bfdbfe; background: #fff; color: var(--accent); }
.toolbar { padding: 18px; display: grid; grid-template-columns: minmax(150px, .6fr) minmax(430px, 2fr) minmax(160px, .8fr); align-items: end; gap: 16px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; font-weight: 600; }
select, input { width: 100%; min-height: 40px; padding: 8px 10px; border: 1px solid #d0d5dd; border-radius: 8px; background: white; color: var(--text); }
.custom-query { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 10px; }
.load-state { text-align: right; color: var(--accent); font-weight: 700; }
.load-state small { display: block; margin-top: 4px; color: var(--muted); font-weight: 400; }
.filter-panel { margin-top: 16px; padding: 20px; }
.filter-actions { display: flex; gap: 8px; }
.filter-help { margin: -4px 0 14px; color: var(--muted); font-size: 13px; }
.dimension-filters { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.dimension-filters select { min-height: 112px; padding: 5px; }
.dimension-filters option { padding: 7px 8px; border-radius: 5px; }
.dimension-filters option:checked { background: var(--accent) linear-gradient(0deg, var(--accent) 0%, var(--accent) 100%); color: #fff; }
.section-block { margin-top: 24px; }
.section-title { margin-bottom: 14px; }
.metric-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.metric-card { min-height: 118px; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.metric-card span { color: var(--muted); font-size: 13px; }
.metric-card strong { display: block; margin-top: 12px; font-size: 26px; letter-spacing: -.03em; }
.metric-card.primary { border-color: #93c5fd; background: var(--accent-soft); }
.metric-card.primary strong { color: var(--accent); }
.two-column { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.two-column > .panel, .section-block.panel { padding: 20px; }
.trend-list { display: grid; gap: 9px; }
.trend-row { display: grid; grid-template-columns: 90px 1fr 100px; align-items: center; gap: 12px; font-size: 13px; }
.trend-track { height: 8px; overflow: hidden; border-radius: 99px; background: #e5e7eb; }
.trend-track i { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.quality-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.quality-item { padding: 14px; border-radius: 10px; background: var(--soft); }
.quality-item span { display: block; color: var(--muted); font-size: 12px; }
.quality-item strong { display: block; margin-top: 6px; font-size: 24px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 12px; font-weight: 700; }
td { font-size: 14px; }
.ranking-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ranking-card { padding: 14px; border-radius: 10px; background: var(--soft); }
.ranking-card h3 { margin: 0 0 12px; font-size: 15px; }
.ranking-card ol { margin: 0; padding-left: 24px; }
.ranking-card li { padding: 6px 0; }
.inline-title { display: flex; justify-content: space-between; align-items: center; }
.empty { padding: 28px; color: var(--muted); text-align: center; }
.text-button { margin-top: 14px; border: 0; background: transparent; color: var(--accent); cursor: pointer; font-weight: 700; }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .version-box { width: 100%; min-width: 0; }
  .page-shell { padding: 18px; }
  .toolbar, .two-column, .dimension-filters { grid-template-columns: 1fr; }
  .custom-query { grid-template-columns: 1fr 1fr; }
  .custom-query .button { grid-column: 1 / -1; }
  .load-state { text-align: left; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ranking-columns { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .metric-grid, .quality-grid, .custom-query { grid-template-columns: 1fr; }
  .custom-query .button { grid-column: auto; }
  .notice { align-items: flex-start; flex-direction: column; }
}