/* ── Utility bar ─────────────────────────────── */
.utility-bar {
  border-bottom: 1px solid var(--border);
  padding: 4px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--gray);
}
.utility-bar nav { display: flex; gap: 18px; }
.utility-bar a:hover { color: var(--red); }

/* ── Masthead ────────────────────────────────── */
.masthead {
  text-align: center;
  padding: 10px 24px 8px;
  border-bottom: 3px double var(--black);
}
.masthead h1 {
  font-family: 'Noto Serif KR', Georgia, serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
}
.masthead p {
  margin-top: 4px;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray);
}

/* ── Main nav ────────────────────────────────── */
.main-nav {
  display: flex;
  justify-content: center;
  gap: 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.main-nav a {
  padding: 7px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
  white-space: nowrap;
  color: #999;
  transition: color .15s;
}
.main-nav a:hover { color: var(--black); }
.main-nav a.active { color: var(--black); }

/* ── Main container ──────────────────────────── */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Section label ───────────────────────────── */
h2.section-label,
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0 4px;
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray);
}
.section-label::after {
  content: '';
  flex: 1;
  height: 0;
}

/* ── Dividers ────────────────────────────────── */
.rule       { border: none; border-top: 1px solid var(--border); margin: 2px 0; }
.rule-thick { border: none; border-top: 3px solid var(--black);  margin: 4px 0; }

/* ── News section ────────────────────────────── */
.news-section { padding-bottom: 24px; }

/* ── Responsive ──────────────────────────────── */
@media (max-width: 1180px) {
  .charts-grid {
    grid-template-columns: 1fr 1px 1fr;
  }
  .charts-grid .chart-divider:nth-of-type(4),
  .charts-grid .chart-divider:nth-of-type(6) {
    display: none;
  }
}

@media (max-width: 760px) {
  .charts-grid {
    grid-template-columns: 1fr 1fr !important;
  }
  .chart-divider {
    display: none;
  }
  .chart-panel {
    border-bottom: 1px solid var(--border);
  }
  .chart-panel:last-child {
    border-bottom: none;
  }
  .main-nav {
    justify-content: center;
  }
  .main-nav a {
    padding: 7px 10px;
    font-size: 11px;
    letter-spacing: 0;
  }
  .home-benchmark-section > .section-label {
    display: none !important;
  }
}