/* 検証済みパレット（dataviz）。ライト/ダークとも隣接CVD ΔE ≥ 9 を満たす。
   light の aqua は対地コントラストが 2.74 と 3:1 未満なので、
   凡例・直接ラベル・表ビューのいずれかを必ず併置する（relief rule）。 */
:root {
  --surface:      #fcfcfb;
  --plane:        #f9f9f7;
  --card:         #ffffff;
  --ink:          #0b0b0b;
  --ink-2:        #52514e;
  --ink-muted:    #898781;
  --grid:         #e1e0d9;
  --rule:         #c3c2b7;
  --accent:       #2a78d6;
  --border:       rgba(11, 11, 11, .10);
  --good:         #0ca30c;
  --critical:     #d03b3b;
  --warning:      #fab219;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --surface:   #1a1a19;
    --plane:     #0d0d0d;
    --card:      #1a1a19;
    --ink:       #ffffff;
    --ink-2:     #c3c2b7;
    --ink-muted: #898781;
    --grid:      #2c2c2a;
    --rule:      #383835;
    --accent:    #3987e5;
    --border:    rgba(255, 255, 255, .10);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--plane);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP",
               "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.7;
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---------------------------------------------------------------- header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { padding: 28px 20px 22px; }
h1 { font-size: 1.5rem; margin: 0 0 .5rem; letter-spacing: -.01em; }
.tagline { margin: 0; color: var(--ink-2); font-size: .92rem; max-width: 68ch; }

.disclaimer {
  background: color-mix(in srgb, var(--warning) 12%, var(--surface));
  border-bottom: 1px solid var(--border);
  font-size: .82rem; line-height: 1.65; color: var(--ink-2);
}
.disclaimer .wrap { padding-top: 10px; padding-bottom: 10px; }
.disclaimer strong { color: var(--ink); }

/* ---------------------------------------------------------------- toolbar */
.toolbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.toolbar-inner {
  display: flex; gap: 22px; align-items: center; flex-wrap: wrap;
  padding-top: 10px; padding-bottom: 10px;
}
.control { display: flex; align-items: center; gap: 9px; }
.control.right { margin-left: auto; }
.control-label { font-size: .74rem; color: var(--ink-muted); letter-spacing: .04em; }
.segmented { display: flex; gap: 3px; background: var(--plane); padding: 3px; border-radius: 8px; }
.segmented button {
  border: 0; background: transparent; color: var(--ink-2);
  font: inherit; font-size: .84rem; padding: 5px 12px; border-radius: 6px;
  cursor: pointer; white-space: nowrap; display: flex; align-items: center; gap: 6px;
}
.segmented button:hover { color: var(--ink); }
.segmented button[aria-selected="true"] {
  background: var(--card); color: var(--ink); font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .07);
}
.swatch { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }
.freshness { font-size: .76rem; color: var(--ink-muted); }

/* ---------------------------------------------------------------- nav */
.viewnav { display: flex; gap: 4px; flex-wrap: wrap; margin: 26px 0 20px; }
.viewnav button {
  border: 1px solid transparent; background: transparent; color: var(--ink-2);
  font: inherit; font-size: .88rem; padding: 7px 14px; border-radius: 999px; cursor: pointer;
}
.viewnav button:hover { background: var(--surface); }
.viewnav button[aria-selected="true"] {
  background: var(--surface); border-color: var(--border); color: var(--ink); font-weight: 600;
}

/* ---------------------------------------------------------------- hero */
.hero {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  margin-top: 26px;
}
.hero .tile { background: var(--surface); padding: 16px 18px; }
.tile-label { font-size: .78rem; color: var(--ink-muted); display: flex; align-items: center; gap: 5px; }
.tile-value { font-size: 1.85rem; font-weight: 650; letter-spacing: -.02em; margin-top: 2px;
              font-variant-numeric: tabular-nums; }
.tile-unit { font-size: .95rem; font-weight: 500; color: var(--ink-2); margin-left: 3px; }
.tile-delta { font-size: .78rem; font-variant-numeric: tabular-nums; }
.up { color: var(--good); } .down { color: var(--critical); } .flat { color: var(--ink-muted); }

/* ---------------------------------------------------------------- sections */
.view { animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; } }

h2 { font-size: 1.2rem; margin: 34px 0 6px; letter-spacing: -.01em; }
h3 { font-size: 1rem; margin: 26px 0 8px; }
.qtag { font-size: .78rem; color: var(--ink-muted); letter-spacing: .02em; }
.lead { color: var(--ink-2); font-size: .89rem; margin: 6px 0 18px; max-width: 74ch; }
.lead strong, .note strong { color: var(--ink); }
.note { font-size: .78rem; color: var(--ink-muted); margin: 6px 0 0; }

.section { border-top: 1px solid var(--border); padding-top: 26px; margin-top: 30px; }
.section:first-child { border-top: 0; padding-top: 0; }

.tilerow {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.tilerow .tile {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 15px;
}

figure {
  margin: 0 0 22px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; padding: 15px 16px 10px;
}
figcaption { font-size: .88rem; font-weight: 600; margin-bottom: 2px; }
.figdesc { font-size: .78rem; color: var(--ink-muted); margin: 0 0 10px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 14px; }

details { margin: 4px 0 20px; }
summary {
  cursor: pointer; font-size: .86rem; color: var(--ink-2);
  padding: 8px 12px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::before { content: "▸ "; color: var(--ink-muted); }
details[open] summary::before { content: "▾ "; }
details[open] summary { border-radius: 8px 8px 0 0; }
.details-body { border: 1px solid var(--border); border-top: 0; border-radius: 0 0 8px 8px;
                padding: 14px; background: var(--surface); }

/* ---------------------------------------------------------------- tables */
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px;
             background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .84rem; }
th, td { text-align: right; padding: 9px 13px; white-space: nowrap;
         border-bottom: 1px solid var(--grid); }
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--ink-muted); font-weight: 500; font-size: .78rem;
           position: sticky; top: 0; background: var(--surface); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--plane); }
td.num { font-variant-numeric: tabular-nums; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .78rem; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: .72rem;
        border: 1px solid var(--border); color: var(--ink-2); }
.pill.high { background: color-mix(in srgb, var(--critical) 16%, transparent);
             color: var(--critical); border-color: transparent; }

/* ---------------------------------------------------------------- misc */
.loading { padding: 60px 0; text-align: center; color: var(--ink-muted); }
.site-footer { border-top: 1px solid var(--border); margin-top: 50px;
               padding: 26px 0 40px; background: var(--surface);
               font-size: .82rem; color: var(--ink-2); }
.site-footer p { margin: 0 0 8px; max-width: 78ch; }
.muted { color: var(--ink-muted); }
a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85em;
       background: var(--plane); padding: 1px 5px; border-radius: 4px; }
.vega-embed { width: 100%; }
.vega-embed summary { border: 0; background: transparent; padding: 0; }

@media (max-width: 640px) {
  .header-inner { padding: 20px 20px 16px; }
  h1 { font-size: 1.25rem; }
  .tile-value { font-size: 1.5rem; }
  .toolbar-inner { gap: 12px; }
  .control.right { margin-left: 0; width: 100%; }
}