:root {
  --accent: #A8526B;
  --pos: #3F8F6B;
  --neg: #C2603F;
  --ink: #1B1714;
  --sub: #6B635C;
  --muted: #9A9089;
  --faint: #A79F98;
  --border: #ECE8E4;
  --bg: #FBF9F7;

  --composite-accent: #A8526B;
  --composite-tint: #FAF1F3;
  --leading-accent: #2C7A8C;
  --leading-tint: #EFF6F7;
  --lagging-accent: #A6791F;
  --lagging-tint: #FAF5EA;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Pretendard', system-ui, -apple-system, sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  background: #F1EDE9;
  color: var(--ink);
}

.topbar {
  position: sticky; top: 0; z-index: 9;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 13px 30px;
  display: flex; align-items: center; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 31px; height: 31px; border-radius: 9px;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 14px; font-weight: 700; color: var(--ink); letter-spacing: 0.05em; }
.brand-sub { font-size: 11px; color: var(--muted); }
.period {
  display: flex; align-items: baseline; gap: 9px;
  margin-left: 14px; padding-left: 16px; border-left: 1px solid var(--border);
}
.period-main { font-size: 13px; font-weight: 600; color: var(--ink); white-space: nowrap; }
.period-sub { font-size: 11px; color: #B7AFA8; }
.topbar-right { margin-left: auto; }
.data-note { font-size: 11.5px; color: var(--muted); background: #F1EDE9; padding: 5px 12px; border-radius: 8px; }

.page { background: var(--bg); padding: 30px 32px 64px; min-height: 100vh; }
.page > .block, .page > .page-footer { max-width: 1180px; margin: 0 auto; }

.block {
  display: flex; flex-direction: column;
  margin-bottom: 30px;
  padding: 24px 26px 28px;
  border-radius: 22px;
  border: 1px solid transparent;
  position: relative;
}
.block + .block { margin-top: 4px; }

.block-composite { background: var(--composite-tint); border-color: #F0DDE2; }
.block-leading { background: var(--leading-tint); border-color: #DCEAEC; }
.block-lagging { background: var(--lagging-tint); border-color: #EDE2C9; }

.block-composite .grid, .block-leading .grid, .block-lagging .grid { position: relative; }

.block-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.block-num {
  font-size: 11px; font-weight: 800; color: #fff;
  width: 22px; height: 22px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.block-composite .block-num { background: var(--composite-accent); }
.block-leading .block-num { background: var(--leading-accent); }
.block-lagging .block-num { background: var(--lagging-accent); }

.block-tag { font-size: 11px; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; padding: 3px 9px; border-radius: 6px; }
.block-composite .block-tag { color: var(--composite-accent); background: rgba(168,82,107,0.12); }
.block-leading .block-tag { color: var(--leading-accent); background: rgba(44,122,140,0.12); }
.block-lagging .block-tag { color: var(--lagging-accent); background: rgba(166,121,31,0.12); }

.block-title { font-size: 16px; font-weight: 700; color: var(--ink); }
.block-desc { margin-left: auto; font-size: 12px; color: var(--muted); }

.grid { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-leading { grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-5 { grid-template-columns: repeat(5, 1fr); gap: 16px; }
.grid-12 { grid-template-columns: repeat(12, 1fr); gap: 18px; }
.span-8 { grid-column: span 8; }
.span-4 { grid-column: span 4; }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 15px;
  box-shadow: 0 1px 2px rgba(27,23,20,0.03);
}

.metric-card {
  padding: 17px;
  display: flex; flex-direction: column; gap: 6px;
  cursor: pointer;
  transition: box-shadow .15s ease, transform .15s ease;
  outline: none;
}
.metric-card:hover, .metric-card:focus-visible {
  box-shadow: 0 4px 14px rgba(27,23,20,0.08);
  transform: translateY(-1px);
}
.metric-card.composite { padding: 22px 22px 16px; border-radius: 15px; gap: 5px; }

.card-label { font-size: 12.5px; font-weight: 600; color: var(--sub); line-height: 1.3; min-height: 31px; }
.metric-card.leading .card-label, .metric-card.lagging .card-label { font-size: 12px; }

.value-row { display: flex; align-items: baseline; gap: 4px; margin-top: 3px; }
.metric-card.composite .value { font-size: 38px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.metric-card.leading .value, .metric-card.lagging .value { font-size: 25px; font-weight: 700; line-height: 1; letter-spacing: -0.01em; }
.unit { font-size: 13px; color: var(--muted); font-weight: 600; }

.delta-row { display: flex; align-items: baseline; gap: 6px; font-size: 12.5px; font-weight: 700; margin-top: 1px; }
.delta.pos { color: var(--pos); }
.delta.neg { color: var(--neg); }
.delta.flat { color: var(--muted); }
.vs-label { color: #B7AFA8; font-weight: 500; font-size: 11px; }

.chart-wrap { margin-top: 8px; margin-bottom: 2px; }
.note { font-size: 11px; color: var(--faint); line-height: 1.35; }

.gmv-card { padding: 24px 24px 18px; grid-column: span 8; display: flex; flex-direction: column; }
.gmv-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 14px; cursor: pointer; }
.gmv-value-row { display: flex; align-items: baseline; gap: 8px; }
.gmv-value { font-size: 40px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.source-note { font-size: 11px; color: var(--faint); text-align: right; line-height: 1.4; }
.month-labels { display: flex; justify-content: space-between; margin-top: 8px; padding: 0 4px; }
.month-labels span { font-size: 11px; color: #B7AFA8; font-weight: 500; }

#channelCard { padding: 24px; display: flex; flex-direction: column; grid-column: span 4; cursor: pointer; }
.donut-row { display: flex; align-items: center; gap: 18px; }
.donut-wrap { position: relative; flex-shrink: 0; }
.donut-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.donut-num { font-size: 20px; font-weight: 700; color: var(--ink); }
.donut-sub { font-size: 10px; color: var(--muted); }
.legend { display: flex; flex-direction: column; gap: 9px; flex: 1; }
.legend-row { display: flex; align-items: center; gap: 8px; }
.dot { width: 9px; height: 9px; border-radius: 3px; flex-shrink: 0; display: inline-block; margin-right: 6px; }
.legend-label { font-size: 12px; color: var(--sub); flex: 1; }
.legend-pct { font-size: 12.5px; font-weight: 700; color: var(--ink); }

.page-footer { font-size: 11.5px; color: var(--muted); text-align: center; padding-top: 16px; border-top: 1px solid var(--border); }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(27,23,20,0.45);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 24px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: #fff; border-radius: 18px; max-width: 620px; width: 100%;
  max-height: 86vh; overflow-y: auto; padding: 32px 32px 28px; position: relative;
  box-shadow: 0 20px 60px rgba(27,23,20,0.25);
}
.modal-close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px;
  border: none; background: #F1EDE9; border-radius: 50%; font-size: 18px; color: var(--sub);
  cursor: pointer; line-height: 1;
}
.modal-close:hover { background: #E7E3DF; }

.detail-head h3 { margin: 0; font-size: 19px; font-weight: 700; color: var(--ink); }
.detail-value-row { display: flex; align-items: baseline; gap: 8px; margin: 14px 0 10px; flex-wrap: wrap; }
.detail-value { font-size: 32px; font-weight: 700; letter-spacing: -0.02em; }
.detail-unit { font-size: 13px; color: var(--muted); font-weight: 600; }
.detail-formula, .detail-source { font-size: 12.5px; color: var(--sub); margin: 4px 0; line-height: 1.5; }
.detail-formula strong, .detail-source strong { color: var(--ink); }

.detail-section { margin-top: 20px; }
.detail-section h4 { font-size: 12.5px; font-weight: 700; color: var(--sub); margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.05em; }
.detail-chart { background: #FBF9F7; border-radius: 10px; padding: 8px 4px 0; }

.detail-table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13px; }
.detail-table th, .detail-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
.detail-table th { color: var(--muted); font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.03em; }
.detail-table td.num { text-align: right; font-weight: 600; }
.detail-table td.muted { color: var(--muted); font-weight: 500; }
.detail-table .dot { vertical-align: middle; }

@media (max-width: 1100px) {
  .grid-4, .grid-leading { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-12 { grid-template-columns: 1fr; }
  .span-8, .span-4 { grid-column: span 1; }
}
@media (max-width: 640px) {
  .grid-4, .grid-leading, .grid-5 { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .period { margin-left: 0; padding-left: 0; border-left: none; }
}