/* Web fonts are linked from each page's <head> (not @import here) so the
   browser can request them in parallel with this stylesheet. DotGothic16 is
   linked only on pages with LAB numbers, subset to "LAB 0-9". */

/* Lab brand and data tokens. Loaded on every page (classics included), so every
   name is prefixed: pages keep their own --serif / --sans. */
:root {
  --lab-font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --lab-font-dot: "DotGothic16", ui-monospace, "Courier New", monospace;

  --lab-navy: #17324d;
  --lab-navy-deep: #14293f;
  --lab-teal: #2b6474;
  --lab-surface: #f5f7f8;
  --lab-surface-soft: #eef2f5;
  --lab-card: #fff;
  --lab-border: #dbe3e8;
  --lab-ink: #22303b;
  --lab-ink-soft: #5a6875;
  --lab-focus: #2b6474;

  /* Data colors carry meaning (gold = selected / own property). Keep them
     independent of brand changes. */
  --data-self: #b8913f;
  --data-market: #6f8c99;
  --data-market-band: rgba(43, 100, 116, .1);
  --data-other: #7f9aa6;
  --data-low: #dcecef;
  --data-mid: #eee8d9;
  --data-high: #f0d8cc;
  --data-unavailable: #e8edef;
  --data-grid: #dce4e7;
  --data-axis: #5a6875;

  --site-shell-paper: var(--lab-surface);
  --site-shell-brand: var(--lab-navy);
  --site-shell-brand-deep: var(--lab-navy-deep);
  --site-shell-ink-soft: var(--lab-ink-soft);
  --site-shell-line: var(--lab-border);
  --site-shell-focus: var(--lab-focus);
  --site-shell-on-dark: #b9c8d4;
  --site-shell-font: var(--lab-font-sans);
}

body.nav-open { overflow: hidden; }
body.site-shell-ready {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body.site-shell-ready > .site-footer { margin-top: auto; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  padding: 10px 14px;
  border-radius: 2px;
  background: var(--site-shell-brand);
  color: #fff;
  font-family: var(--site-shell-font);
  font-size: 14px;
  text-decoration: none;
}
.skip-link:focus { top: 16px; }

.site-header,
.site-footer,
.site-header *,
.site-footer * { box-sizing: border-box; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(245, 247, 248, .95);
  border-bottom: 1px solid var(--site-shell-line);
  color: var(--site-shell-brand);
  font-family: var(--site-shell-font);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-header .container,
.site-footer .container {
  width: min(calc(100% - 96px), 1180px);
  max-width: none;
  margin-inline: auto;
  padding-inline: 0;
}

.site-header .header-inner {
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.site-header a,
.site-footer a { color: inherit; text-decoration: none; }

.site-header .brand,
.site-footer .brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--site-shell-brand);
}

.site-header .brand__mark {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.site-header .brand-copy,
.site-footer .brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header .brand-copy strong {
  color: var(--site-shell-brand);
  font-family: var(--site-shell-font);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .04em;
}

.site-header .brand-copy small {
  margin-top: 5px;
  color: var(--site-shell-ink-soft);
  font-size: 10px;
  letter-spacing: .04em;
}

.site-header .global-nav { display: flex; align-items: center; }
.site-header .global-nav ul {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header .global-nav li { margin: 0; padding: 0; }
.site-header .global-nav li a {
  position: relative;
  display: inline-block;
  color: var(--site-shell-ink-soft);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: color .2s;
}
.site-header .global-nav li a:hover { color: var(--lab-teal); }

.site-header .menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 9px;
}
.site-header .menu-toggle span {
  display: block;
  height: 1px;
  margin: 7px 0;
  background: var(--site-shell-brand);
  transition: transform .25s, opacity .25s;
}
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.site-header a:focus-visible,
.site-header button:focus-visible,
.site-footer a:focus-visible {
  outline: 2px solid var(--site-shell-focus);
  outline-offset: 5px;
}

.site-footer {
  width: 100%;
  margin: 0;
  padding: 58px 0 24px;
  border: 0;
  background: var(--site-shell-brand-deep);
  color: #fff;
  font-family: var(--site-shell-font);
}

.site-footer .footer-grid {
  display: block;
  padding-bottom: 40px;
}

.site-footer .footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.site-footer .brand--footer { color: #fff; }
.site-footer .brand-copy strong {
  color: #fff;
  font-family: var(--site-shell-font);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .04em;
}
.site-footer .brand-copy small {
  margin-top: 7px;
  color: var(--site-shell-on-dark);
  font-size: 10px;
  letter-spacing: .04em;
}
.site-footer .footer-grid > div > small {
  color: var(--site-shell-on-dark);
  font-size: 11px;
  letter-spacing: .03em;
}
.site-footer small > a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer .footer-bottom {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  color: var(--site-shell-on-dark);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: .03em;
}
.site-footer .footer-note-link {
  color: var(--site-shell-on-dark);
  font-size: inherit;
  line-height: inherit;
  transition: color .2s;
}
.site-footer .footer-note-link:hover { color: #fff; }
.site-footer .footer-bottom span { margin-right: auto; }

@media (max-width: 1050px) {
  .site-header .global-nav ul { gap: 18px; }
  .site-header .global-nav li a { font-size: 12px; }
}

@media (max-width: 900px) {
  .site-header .container,
  .site-footer .container { width: calc(100% - 48px); }
  .site-header .header-inner { height: 74px; }
  .site-header .menu-toggle { display: block; position: relative; z-index: 2; }
  .site-header .global-nav {
    position: fixed;
    inset: 74px 0 0;
    display: block;
    overflow-y: auto;
    padding: 38px 24px 48px;
    background: rgba(245, 247, 248, .99);
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity .2s, transform .2s, visibility .2s;
  }
  .site-header .global-nav.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .site-header .global-nav ul {
    width: min(100%, 520px);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-header .global-nav li { border-bottom: 1px solid var(--site-shell-line); }
  .site-header .global-nav li a {
    display: block;
    padding: 18px 2px;
    color: var(--site-shell-brand);
    font-size: 16px;
  }
}

@media (max-width: 620px) {
  .site-header .container,
  .site-footer .container { width: calc(100% - 40px); }
  .site-header .brand__mark { width: 32px; height: 32px; }
  .site-header .brand-copy strong { font-size: 16px; }
  .site-header .brand-copy small { font-size: 9px; }
  .site-footer { padding: 42px 0 24px; }
  .site-footer .footer-grid { padding-bottom: 30px; }
  .site-footer .footer-bottom {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px 20px;
  }
  .site-footer .footer-bottom span { width: 100%; margin-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header .global-nav,
  .site-header .menu-toggle span { transition: none; }
}

@media print {
  .site-header,
  .site-footer { display: none !important; }
}