:root {
  --bg: #f7f5ef;
  --surface: #ffffff;
  --surface-soft: #efede6;
  --ink: #14242b;
  --muted: #637078;
  --line: #dcd8ce;
  --teal: #0b7774;
  --teal-dark: #075b59;
  --sand: #c99b55;
  --sand-soft: #f2e7d5;
  --green-soft: #dceee9;
  --red-soft: #f4dfda;
  --max: 1180px;
  --radius: 18px;
  --shadow: 0 14px 38px rgba(21, 36, 43, 0.07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img, svg { max-width: 100%; }
.container { width: min(calc(100% - 36px), var(--max)); margin-inline: auto; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(247, 245, 239, 0.94);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--surface);
}
.brand-mark svg { width: 23px; height: 23px; }
.nav { display: flex; gap: 24px; align-items: center; }
.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 600;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }

.hero {
  padding: 88px 0 54px;
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-dark);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.76rem;
  font-weight: 800;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--teal);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.75fr;
  gap: 58px;
  align-items: end;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  font-size: clamp(2.8rem, 7vw, 5.7rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  margin: 20px 0 26px;
  max-width: 900px;
}
.hero-copy {
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: var(--muted);
  max-width: 720px;
}
.hero-note {
  border-left: 3px solid var(--sand);
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 17px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  font-size: 0.92rem;
  border: 1px solid var(--ink);
}
.button.primary { color: white; background: var(--ink); }
.button.secondary { background: transparent; }
.button:hover { transform: translateY(-1px); }

.section { padding: 68px 0; border-bottom: 1px solid var(--line); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}
.section-head h2, .report-body h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 0;
}
.section-head p { color: var(--muted); max-width: 560px; margin-bottom: 0; }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.kpi {
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
}
.kpi .value {
  font-size: clamp(1.65rem, 4vw, 2.55rem);
  line-height: 1;
  font-weight: 820;
  letter-spacing: -0.045em;
}
.kpi .label { color: var(--muted); font-size: 0.9rem; margin-top: 10px; }
.kpi .delta { color: var(--teal-dark); font-size: 0.78rem; font-weight: 750; margin-top: 6px; }

.latest-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 26px;
  padding: clamp(26px, 5vw, 48px);
  box-shadow: var(--shadow);
}
.latest-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 18px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--teal-dark);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.latest-card h3 {
  font-size: clamp(1.65rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}
.latest-card > p { color: var(--muted); max-width: 780px; }

.volume-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: stretch;
  margin-top: 34px;
}
.chart-panel, .observation-panel {
  background: var(--surface-soft);
  border-radius: var(--radius);
  padding: 22px;
}
.bar-chart {
  height: 190px;
  display: flex;
  gap: 14px;
  align-items: end;
  padding-top: 24px;
}
.bar-wrap { flex: 1; min-width: 0; text-align: center; }
.bar {
  background: var(--teal);
  border-radius: 8px 8px 3px 3px;
  min-height: 8px;
  position: relative;
}
.bar.current { background: var(--ink); }
.bar-value { font-size: 0.74rem; font-weight: 800; margin-bottom: 6px; }
.bar-label {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 8px;
  white-space: nowrap;
}
.observation-list { display: grid; gap: 14px; }
.observation {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.observation:last-child { padding-bottom: 0; border-bottom: none; }
.observation strong { display: block; font-size: 1.06rem; }
.observation span { color: var(--muted); font-size: 0.9rem; }

.signal-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.signal-card {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  flex-direction: column;
}
.signal-card .status { margin-bottom: auto; }
.signal-card h3 { font-size: 1.35rem; letter-spacing: -0.025em; margin: 16px 0 8px; }
.signal-card p { color: var(--muted); margin-bottom: 0; }
.badge.experimental { background: var(--sand-soft); color: #6c4a19; }
.badge.exploratory { background: #e7e6ef; color: #514d72; }

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 52px;
}
.split p { color: var(--muted); }

.page-hero { padding: 60px 0 38px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(2.3rem, 6vw, 4.9rem); margin-bottom: 18px; }
.page-hero p { color: var(--muted); max-width: 780px; font-size: 1.08rem; }
.breadcrumb { color: var(--muted); font-size: 0.88rem; margin-bottom: 22px; }
.breadcrumb a { color: var(--muted); }

.report-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 52px;
  padding: 56px 0 80px;
}
.report-body { min-width: 0; }
.report-body h2 { margin-top: 58px; margin-bottom: 18px; }
.report-body h3 { font-size: 1.25rem; margin-top: 34px; letter-spacing: -0.02em; }
.report-body p, .report-body li { color: #34474f; }
.report-body strong { color: var(--ink); }
.report-body ul { padding-left: 1.25rem; }
.report-body li { margin: 7px 0; }

.report-aside {
  position: sticky;
  top: 104px;
  align-self: start;
}
.aside-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
}
.aside-card h3 { font-size: 0.92rem; margin-bottom: 10px; }
.aside-card p, .aside-card li { color: var(--muted); font-size: 0.84rem; }
.aside-card ul { padding-left: 1.1rem; margin: 0; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  min-width: 640px;
}
th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}
th {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.77rem;
  text-transform: uppercase;
  letter-spacing: 0.045em;
}
td { font-size: 0.9rem; }
td.num, th.num { text-align: right; }
tr:last-child td { border-bottom: none; }

.callout {
  border-left: 4px solid var(--teal);
  background: var(--green-soft);
  padding: 18px 20px;
  border-radius: 0 12px 12px 0;
  margin: 30px 0;
}
.callout.warning {
  border-left-color: var(--sand);
  background: var(--sand-soft);
}
.callout p { margin-bottom: 0; color: var(--ink); }

.archive-list { display: grid; gap: 14px; }
.archive-item {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
}
.archive-item:hover { border-color: #a9a49b; }
.archive-item .date { color: var(--muted); font-size: 0.88rem; }
.archive-item .title { font-weight: 760; }
.archive-item .arrow { color: var(--teal); font-weight: 900; }

.prose { max-width: 820px; }
.prose h2 { font-size: 2rem; letter-spacing: -0.035em; margin-top: 46px; }
.prose p, .prose li { color: #34474f; }
.code-filter {
  background: var(--ink);
  color: #f5f3ed;
  border-radius: 14px;
  padding: 18px 20px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88rem;
  overflow-x: auto;
}

.site-footer { padding: 36px 0 46px; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  color: var(--muted);
  font-size: 0.84rem;
}
.footer-inner p { margin: 0; max-width: 660px; }

@media (max-width: 900px) {
  .hero-grid, .volume-grid, .split, .report-wrap { grid-template-columns: 1fr; }
  .hero { padding-top: 60px; }
  .hero-note { max-width: 640px; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .report-aside { position: static; }
  .signal-grid { grid-template-columns: 1fr; }
  .archive-item { grid-template-columns: 1fr auto; }
  .archive-item .date { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .header-inner { min-height: 64px; }
  .brand { font-size: 0.94rem; }
  .nav { gap: 12px; }
  .nav a:nth-child(2), .nav a:nth-child(3) { display: none; }
  .hero { padding: 46px 0 42px; }
  h1 { font-size: 3.2rem; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kpi { padding: 18px; }
  .section { padding: 50px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }
  .footer-inner { display: block; }
  .footer-inner p + p { margin-top: 12px; }
}