:root {
  --bg: #f5f9ff;
  --surface: #ffffff;
  --surface-soft: #eef5ff;
  --text: #10233f;
  --heading: #10233f;
  --subtext: #42526b;
  --muted: #5b6b82;
  --line: #d8e5f7;
  --primary: #1f5edc;
  --primary-dark: #17449c;
  --accent: #5c8fd6;
  --shadow: 0 18px 42px rgba(16, 35, 63, 0.1);
  --shadow-lift: 0 18px 34px rgba(16, 35, 63, 0.12);
  --glow-subtle: 0 0 0 1px rgba(31, 94, 220, 0.15), var(--shadow-lift);
  --motion-duration-fast: 160ms;
  --motion-duration-base: 260ms;
  --motion-duration-slow: 720ms;
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ease-soft: cubic-bezier(0.16, 1, 0.3, 1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-wrap: anywhere;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  line-height: 1.75;
  letter-spacing: 0;
  overflow-x: hidden;
  animation: page-reveal var(--motion-duration-slow) var(--motion-ease-soft);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 229, 239, 0.8);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 6px;
  background: #10233f;
  color: #ffffff;
  font-size: 18px;
}

.brand-name {
  font-size: 21px;
  letter-spacing: 0;
}

.site-nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a,
.footer-links a,
.text-link {
  position: relative;
  transition: color var(--motion-duration-fast) var(--motion-ease), opacity var(--motion-duration-fast) var(--motion-ease);
}

.site-nav a::after,
.footer-links a::after,
.text-link::after {
  position: absolute;
  right: 0;
  bottom: -4px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  content: "";
  opacity: 0.32;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--motion-duration-base) var(--motion-ease);
}

.site-nav a:hover,
.footer-links a:hover,
.text-link:hover,
.site-nav a:focus-visible,
.footer-links a:focus-visible,
.text-link:focus-visible {
  color: var(--primary);
}

.site-nav a:hover::after,
.footer-links a:hover::after,
.text-link:hover::after,
.site-nav a:focus-visible::after,
.footer-links a:focus-visible::after,
.text-link:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 0 56px;
  background:
    linear-gradient(180deg, #f5f9ff 0%, #ffffff 76%),
    radial-gradient(circle at 74% 22%, rgba(31, 94, 220, 0.12), transparent 34%);
}

.hero::before,
.about-hero::before {
  position: absolute;
  inset: -16%;
  z-index: -1;
  background:
    radial-gradient(circle at 18% 24%, rgba(37, 99, 235, 0.08), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(79, 164, 200, 0.13), transparent 34%),
    linear-gradient(115deg, rgba(255, 255, 255, 0), rgba(37, 99, 235, 0.045), rgba(255, 255, 255, 0));
  content: "";
  opacity: 0.82;
  pointer-events: none;
  animation: surface-drift 18s var(--motion-ease-soft) infinite alternate;
}

.hero::before {
  background: linear-gradient(115deg, rgba(216, 229, 247, 0), rgba(216, 229, 247, 0.6), rgba(216, 229, 247, 0));
  opacity: 0.5;
  animation: none;
}

.hero > .container,
.about-hero > .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.54fr) minmax(410px, 0.46fr);
  gap: clamp(38px, 5vw, 64px);
  align-items: center;
}

.hero-stage {
  position: relative;
  min-height: clamp(480px, 56vh, 600px);
  display: flex;
  align-items: center;
  isolation: isolate;
}

.hero-art {
  position: absolute;
  inset: -22px -44px -14px -44px;
  z-index: 0;
  overflow: hidden;
  border-radius: 18px;
  pointer-events: none;
}

.hero-art::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(245, 249, 255, 0.94) 0%, rgba(245, 249, 255, 0.76) 38%, rgba(245, 249, 255, 0.36) 70%, rgba(245, 249, 255, 0.48) 100%),
    linear-gradient(180deg, rgba(245, 249, 255, 0.56) 0%, rgba(255, 255, 255, 0.18) 52%, rgba(255, 255, 255, 0.76) 100%);
}

.hero-art-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: 56% 50%;
  opacity: 0.62;
  transform: scale(1.01);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, 630px);
  border: 1px solid rgba(216, 229, 247, 0.38);
  border-radius: 10px;
  padding: clamp(28px, 3vw, 36px);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.88) 0%, rgba(255, 255, 255, 0.78) 72%, rgba(255, 255, 255, 0.54) 100%);
  box-shadow: 0 14px 30px rgba(16, 35, 63, 0.06);
  backdrop-filter: blur(5px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--heading);
  overflow-wrap: anywhere;
}

p {
  overflow-wrap: anywhere;
}

@keyframes page-reveal {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes content-rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes surface-drift {
  from {
    transform: translate3d(-1.5%, -1%, 0) scale(1.02);
  }

  to {
    transform: translate3d(1.5%, 1%, 0) scale(1.04);
  }
}

.hero-copy,
.about-hero-copy,
.section-heading,
.page-header,
.article-header {
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
}

h1 {
  margin: 0;
  font-size: clamp(46px, 5.1vw, 66px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-title {
  max-width: 620px;
  font-size: clamp(44px, 4.35vw, 60px);
  line-height: 1.06;
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero-title span {
  display: block;
  overflow-wrap: normal;
  word-break: keep-all;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.22;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 560px;
  margin: 20px 0 0;
  color: var(--subtext);
  font-size: 17px;
  line-height: 1.86;
}

.hero-meta-strip {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 20px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 9px 0;
  color: #5b6b82;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.concept-line {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-start;
  margin-top: 20px;
  border-left: 3px solid var(--accent);
  padding: 2px 0 2px 14px;
  color: var(--heading);
  font-weight: 800;
}

.concept-line small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.hero-actions .button-primary {
  min-height: 52px;
  padding: 0 28px;
  box-shadow: 0 14px 26px rgba(31, 94, 220, 0.24);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 0 22px;
  font-weight: 800;
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    background-color var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.button:hover {
  transform: translateY(-2px);
}

.button:focus-visible {
  outline: 3px solid rgba(31, 94, 220, 0.28);
  outline-offset: 3px;
}

.button-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 12px 22px rgba(31, 94, 220, 0.2);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--primary-dark);
  box-shadow: 0 15px 28px rgba(31, 94, 220, 0.24);
}

.button-secondary {
  background: #ffffff;
  border: 1px solid var(--line);
  color: var(--primary-dark);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(31, 94, 220, 0.28);
  box-shadow: var(--glow-subtle);
}

.hero-visual-shell {
  border: 1px solid rgba(216, 229, 247, 0.78);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(245, 249, 255, 0.54));
  box-shadow: 0 14px 26px rgba(16, 35, 63, 0.07);
  justify-self: end;
  padding: 10px;
  width: min(100%, 620px);
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.hero-brand-image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(216, 229, 247, 0.68);
  border-radius: 8px;
  background: #ffffff;
  object-fit: cover;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
}

.panel-head strong {
  color: var(--primary-dark);
}

.metric-card {
  margin-top: 24px;
  border-radius: var(--radius);
  background: var(--surface-soft);
  padding: 20px;
}

.metric-card strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
  line-height: 1.35;
}

.principle-words {
  font-size: 0.9em;
  color: var(--muted, #6b7280);
  letter-spacing: 0.02em;
  margin-bottom: 0.5em;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.mini-chart {
  display: flex;
  height: 160px;
  align-items: end;
  gap: 14px;
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, #f8fbfe);
}

.mini-chart span {
  flex: 1;
  min-width: 24px;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--accent), var(--primary));
}

.panel-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.panel-list p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--subtext);
  font-size: 14px;
}

.panel-list span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-lead {
  margin: 18px 0 0;
  color: var(--subtext);
  font-size: 17px;
}

.split-heading {
  display: flex;
  max-width: none;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.text-link {
  color: var(--primary);
  font-weight: 800;
}

.feature-section {
  background: #ffffff;
}

.phase-section {
  background: #ffffff;
  padding-top: 56px;
}

.phase-panel {
  max-width: 980px;
  padding: 34px;
}

.quiet-note {
  color: var(--subtext);
  font-size: 15px;
}

.feature-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(18, 61, 104, 0.07);
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.feature-card,
.article-card {
  padding: 24px;
}

.feature-card p,
.article-card p,
.about-card p,
.data-item p,
.site-footer p {
  margin: 0;
  color: var(--subtext);
}

.card-icon {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
}

.article-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.article-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid var(--line);
  transition:
    opacity var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.article-card .status {
  width: fit-content;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary-dark);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 800;
}

.article-card a {
  margin-top: auto;
  color: var(--primary);
  font-weight: 800;
}

.article-card .read-more {
  margin-top: auto;
  padding-top: 14px;
  color: var(--primary);
  font-weight: 800;
}

.card:hover,
.card:focus-within,
.hero-visual-shell:hover,
.hero-visual-shell:focus-within {
  border-color: rgba(26, 58, 107, 0.26);
  box-shadow: var(--glow-subtle);
  transform: translateY(-2px);
}

.article-card:hover .article-card-image,
.article-card:focus-within .article-card-image {
  border-color: rgba(26, 58, 107, 0.28);
  opacity: 0.96;
}

.data-section {
  padding: 76px 0;
  background: linear-gradient(180deg, #f5f9ff 0%, #eef5ff 100%);
}

.data-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 40px;
  align-items: center;
}

.data-list {
  display: grid;
  gap: 12px;
}

.data-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  padding: 20px;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease),
    background-color var(--motion-duration-base) var(--motion-ease);
}

.data-item:hover,
.data-item:focus-within {
  border-color: rgba(31, 94, 220, 0.26);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--glow-subtle);
  transform: translateY(-2px);
}

.data-item span {
  flex: 0 0 auto;
  border-radius: 999px;
  background: #e7f0ff;
  color: var(--primary-dark);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 800;
}

.about-section {
  padding: 76px 0;
  background: #ffffff;
}

.about-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #ffffff 0%, #f3f8fd 100%);
  padding: 42px;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.about-card p:last-child {
  max-width: 780px;
  margin-top: 18px;
  font-size: 17px;
}

.site-footer {
  background: #0f2340;
  color: #ffffff;
  padding: 42px 0 22px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 34px;
}

.footer-brand {
  margin-bottom: 10px;
}

.site-footer .brand-mark {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #1f4f8a;
  box-shadow: 0 0 0 1px rgba(216, 229, 247, 0.08);
}

.footer-links {
  align-items: flex-start;
  color: rgba(255, 255, 255, 0.72);
}

.copyright {
  margin-top: 28px;
  border-top: 1px solid rgba(216, 229, 247, 0.18);
  padding-top: 16px;
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 880px) {
  .header-inner,
  .footer-inner,
  .split-heading,
  .data-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding: 14px 0;
  }

  .site-nav,
  .footer-links {
    width: 100%;
    flex-wrap: wrap;
    gap: 14px 18px;
  }

  .hero {
    padding-top: 64px;
  }

  .hero-stage {
    min-height: 640px;
  }

  .hero-art {
    inset: -28px -36px -24px -36px;
  }

  .hero-art-image {
    object-position: 58% 50%;
    opacity: 0.6;
    transform: scale(1.14);
  }

  .hero-content {
    width: min(100%, 640px);
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.76) 0%, rgba(255, 255, 255, 0.64) 68%, rgba(255, 255, 255, 0.34) 100%);
  }

  .hero-grid,
  .data-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual-shell {
    justify-self: start;
    width: min(100%, 680px);
  }

  .feature-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 36px, 1120px);
  }

  .section {
    padding: 62px 0;
  }

  .hero {
    padding: 56px 0 60px;
  }

  .hero-stage {
    min-height: 620px;
  }

  .hero-art {
    inset: -26px -28px -22px -28px;
  }

  .hero-art::after {
    background:
      linear-gradient(90deg, rgba(245, 249, 255, 0.92) 0%, rgba(245, 249, 255, 0.80) 48%, rgba(245, 249, 255, 0.56) 100%),
      linear-gradient(180deg, rgba(245, 249, 255, 0.60) 0%, rgba(255, 255, 255, 0.18) 48%, rgba(255, 255, 255, 0.70) 100%);
  }

  .hero-art-image {
    object-position: 61% 48%;
    opacity: 0.46;
    transform: scale(1.32);
  }

  h1 {
    font-size: 42px;
  }

  .hero-lead,
  .section-lead,
  .about-card p:last-child {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .hero-title {
    font-size: 32px;
    line-height: 1.08;
  }

  .hero-content {
    border-radius: 12px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: 0 12px 24px rgba(16, 35, 63, 0.065);
    border-right-color: rgba(216, 229, 247, 0.18);
  }

  .hero-visual-shell,
  .feature-card,
  .article-card,
  .about-card,
  .about-principle-card {
    padding: 22px;
  }

  .data-item {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-visual-shell {
    width: 100%;
    padding: 8px;
  }
}

.article-main {
  background: #ffffff;
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 48px 0 88px;
}

.breadcrumb {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.breadcrumb a {
  color: var(--primary);
}

.article-document {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  min-width: 0;
}

.article-header {
  padding: 52px 0 30px;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}

.article-header h1 {
  max-width: 900px;
  font-size: clamp(36px, 5vw, 44px);
  word-break: auto-phrase;
  overflow-wrap: anywhere;
  color: var(--heading);
}

.article-description {
  width: 100%;
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--subtext);
  font-size: 18px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.article-meta span {
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary-dark);
  padding: 5px 11px;
  font-size: 12px;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.article-hero-image {
  margin: 30px 0 0;
}

.article-hero-image img {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.article-content {
  padding-top: 16px;
  min-width: 0;
  font-size: 17.5px;
  line-height: 1.85;
}

.article-content h2 {
  max-width: 820px;
  margin: 64px auto 22px;
  padding: 10px 0 12px 16px;
  border-bottom: 1px solid var(--line);
  border-left: 4px solid var(--primary);
  color: var(--heading);
  font-size: clamp(26px, 3vw, 30px);
}

.article-content h3 {
  max-width: 820px;
  margin: 38px auto 12px;
  color: var(--heading);
  font-size: 21px;
}

.article-content p,
.article-content li {
  color: var(--text);
  font-size: 17.5px;
  line-height: 1.85;
  overflow-wrap: anywhere;
  word-break: normal;
}

.article-content > section > p,
.article-content > section > ul,
.article-content > section > ol,
.article-content > section > pre {
  width: min(100%, 820px);
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.article-content p {
  margin-bottom: 1.35em;
}

.article-content a {
  color: var(--primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content ul,
.article-content ol {
  padding-left: 1.4em;
}

.article-content li + li {
  margin-top: 6px;
}

.data-freshness-list {
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(7.5rem, 10rem) minmax(0, 1fr);
  column-gap: 1rem;
  row-gap: 0.75rem;
}

.data-freshness-list dt {
  margin: 0;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.7;
  word-break: keep-all;
}

.data-freshness-list dd {
  min-width: 0;
  margin: 0;
  color: inherit;
  line-height: 1.8;
  word-break: normal;
  overflow-wrap: break-word;
  line-break: strict;
}

.article-figure {
  max-width: 900px;
  margin: 2.5rem auto;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
}

.article-figure img {
  display: block;
  width: 100%;
  max-width: 860px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
  transition:
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.article-hero-image img:hover,
.article-hero-image img:focus-visible,
.article-figure:hover img,
.article-figure:focus-within img {
  border-color: rgba(79, 164, 200, 0.38);
  box-shadow: 0 14px 30px rgba(18, 61, 104, 0.09);
}

.article-figure figcaption {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 10px;
  color: var(--subtext);
  font-size: 13px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.table-wrap:hover,
.table-wrap:focus-within {
  border-color: rgba(79, 164, 200, 0.38);
  box-shadow: 0 14px 30px rgba(18, 61, 104, 0.08);
}

.article-content table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: #ffffff;
}

.article-content th,
.article-content td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-content th {
  background: var(--surface-soft);
  color: var(--primary-dark);
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-scroll-helper {
  margin: 0.8rem 0 0.45rem;
  color: var(--subtext);
  font-size: 0.92rem;
  line-height: 1.6;
}

.article-031-table-scroll {
  margin: 0.5rem 0 1rem;
}

.article-031-table {
  table-layout: auto;
  font-variant-numeric: tabular-nums;
}

.article-content .article-031-table th,
.article-content .article-031-table td {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
  line-break: strict;
}

.article-content .article-031-table th {
  vertical-align: middle;
}

.article-content .article-031-table tbody th {
  text-align: left;
}

.article-content .article-031-table td {
  text-align: right;
}

.article-content .article-031-household-table {
  min-width: 760px;
}

.article-content .article-031-change-table {
  min-width: 900px;
}

.article031-mobile-cards,
.article031-card-helper {
  display: none;
}

.article031-mobile-cards {
  margin: 0.85rem 0 1.2rem;
}

.article031-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 14px;
}

.article031-card-title {
  margin: 0 0 0.75rem;
  color: var(--heading);
  font-size: 1rem;
  line-height: 1.45;
}

.article031-card dl {
  margin: 0;
}

.article031-card-row {
  display: grid;
  grid-template-columns: minmax(6.5rem, 42%) minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.42rem 0;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

.article031-card-row:first-child {
  border-top: 0;
}

.article031-card-row-emphasis {
  font-weight: 700;
}

.article031-card-label {
  margin: 0;
  color: var(--subtext);
  font-size: 0.88rem;
  line-height: 1.5;
  white-space: nowrap;
}

.article031-card-value {
  margin: 0;
  color: var(--heading);
  font-size: 0.94rem;
  line-height: 1.5;
  text-align: right;
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 640px) {
  .article031-table-desktop {
    display: none;
  }

  .article031-card-helper {
    display: block;
    margin: 0.8rem 0 0.45rem;
    color: var(--subtext);
    font-size: 0.86rem;
    line-height: 1.6;
  }

  .article031-mobile-cards {
    display: grid;
    gap: 1rem;
  }

  .article031-card {
    padding: 14px;
  }

  .article031-card-title {
    font-size: 1.02rem;
  }

  .article031-card-row {
    grid-template-columns: minmax(5.75rem, 36%) minmax(0, 1fr);
    gap: 0.65rem;
  }

  .article031-card-label,
  .article031-card-value {
    word-break: keep-all;
    overflow-wrap: normal;
    line-break: strict;
  }
}

.article-content code,
.article-content pre {
  border-radius: var(--radius);
  background: #eef3f8;
  color: var(--primary-dark);
  font-family: "Consolas", "Menlo", monospace;
}

.article-content code {
  padding: 2px 5px;
}

.article-content pre {
  overflow-x: auto;
  padding: 16px;
}

.info-box,
.disclaimer-box,
.source-box {
  max-width: 860px;
  margin: 32px auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f8fbfe;
  padding: 1.25rem 1.5rem;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.info-box:hover,
.info-box:focus-within,
.disclaimer-box:hover,
.disclaimer-box:focus-within,
.source-box:hover,
.source-box:focus-within {
  border-color: rgba(79, 164, 200, 0.34);
  box-shadow: 0 14px 30px rgba(18, 61, 104, 0.08);
}

.disclaimer-box {
  background: #f5f7fa;
}

.source-box {
  background: #f8fafc;
}

.article034-source-note-card {
  max-width: 860px;
  margin: 20px auto 32px;
  padding: 8px;
  border: 1px solid rgba(216, 229, 247, 0.9);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 255, 0.92));
  box-shadow: 0 14px 32px rgba(16, 35, 63, 0.06);
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
}

.article034-source-note-row {
  display: grid;
  grid-template-columns: minmax(5.5rem, 18%) minmax(0, 1fr);
  gap: 1.2rem;
  align-items: start;
  padding: 15px 18px;
  border-bottom: 1px solid rgba(216, 229, 247, 0.72);
}

.article034-source-note-row:last-child {
  border-bottom: 0;
}

.article034-source-note-row dt {
  margin: 0;
  color: #1a3a6b;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.7;
}

.article034-source-note-row dd {
  margin: 0;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.85;
}

.article034-source-note-row-caution {
  margin-top: 2px;
  border-radius: 12px;
  border-bottom: 0;
  background: rgba(238, 245, 255, 0.72);
  box-shadow: inset 3px 0 0 rgba(31, 94, 220, 0.22);
}

.article034-source-note-row-caution dt {
  color: #10233f;
}

.data-source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 20px;
  margin-bottom: 24px;
}

.data-source-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
  padding: 1.25rem 1.5rem;
}

.data-source-card h3 {
  margin-top: 0;
  color: var(--primary-dark);
}

.data-source-card dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.data-source-card dt {
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
}

.data-source-card dd {
  margin: 2px 0 0;
  color: var(--text);
}

.source-list {
  display: grid;
  gap: 12px;
  padding-left: 0;
  list-style: none;
}

.source-list li {
  margin: 0;
}

.page-main {
  background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 76%);
}

.about-page {
  background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 78%);
}

.about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 96px 0 72px;
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 82%),
    radial-gradient(circle at 78% 20%, rgba(79, 164, 200, 0.14), transparent 32%);
}

.about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.75fr);
  gap: 56px;
  align-items: center;
}

.about-hero-copy p:not(.eyebrow):not(.hero-lead) {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--subtext);
  font-size: 17px;
}

.about-brand-panel .metric-card strong {
  font-size: 21px;
}

.about-content-section {
  padding-top: 0;
}

.about-content {
  display: grid;
  gap: 28px;
  max-width: 1040px;
}

.about-story h2,
.about-caution h2 {
  margin-bottom: 16px;
}

.about-meaning {
  padding: 32px 0 10px;
}

.about-principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.about-principle-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  gap: 10px;
  padding: 26px;
}

.about-principle-card .card-icon {
  width: auto;
  min-width: 44px;
  height: auto;
  align-self: flex-start;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  padding: 4px 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

.about-principle-card p {
  margin: 0;
  color: var(--subtext);
}

.about-caution {
  border-left: 4px solid var(--primary);
}

.legal-warning {
  margin: 20px 0 28px;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  background: #eef6ff;
  padding: 16px 18px;
}

.legal-warning p {
  margin: 0;
  color: var(--text);
}

.legal-page .updated {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.legal-page .table-wrap {
  margin-top: 16px;
}

.legal-page th {
  width: 12rem;
  white-space: nowrap;
}

.page-header {
  padding: 84px 0 32px;
}

.page-header h1 {
  max-width: 780px;
  font-size: clamp(34px, 5vw, 58px);
}

.page-lead {
  max-width: 780px;
  margin: 22px 0 0;
  color: var(--subtext);
  font-size: 18px;
}

.simple-page {
  max-width: 880px;
  padding: 12px 0 88px;
}

.notice-card,
.content-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(18, 61, 104, 0.07);
  padding: 30px;
  animation: content-rise var(--motion-duration-slow) var(--motion-ease-soft);
  transition:
    transform var(--motion-duration-base) var(--motion-ease),
    box-shadow var(--motion-duration-base) var(--motion-ease),
    border-color var(--motion-duration-base) var(--motion-ease);
}

.notice-card:hover,
.notice-card:focus-within,
.content-panel:hover,
.content-panel:focus-within,
.about-card:hover,
.about-card:focus-within {
  border-color: rgba(79, 164, 200, 0.42);
  box-shadow: var(--glow-subtle);
  transform: translateY(-2px);
}

.notice-card p,
.content-panel p,
.content-panel li {
  color: var(--text);
  font-size: 17px;
  line-height: 1.85;
}

.data-format-list,
.hub-link-list {
  margin: 0;
  padding-left: 1.2em;
}

.hub-link-list a {
  color: var(--primary);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-panel + .content-panel {
  margin-top: 18px;
}

.content-panel h2 {
  margin-bottom: 14px;
  font-size: clamp(24px, 3vw, 32px);
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.back-link {
  display: inline-flex;
  margin-top: 26px;
  color: var(--primary);
  font-weight: 800;
}

@media (max-width: 640px) {
  .data-freshness-list {
    display: block;
  }

  .data-freshness-list dt {
    margin-top: 0.9rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(15, 23, 42, 0.10);
    font-size: 0.9rem;
    line-height: 1.6;
  }

  .data-freshness-list dt:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }

  .data-freshness-list dd {
    margin-top: 0.25rem;
    font-size: 0.95rem;
    line-height: 1.85;
  }
}

@media (max-width: 560px) {
  .article-shell {
    padding: 28px 0 62px;
  }

  .article-header {
    padding-top: 34px;
  }

  .article-document {
    padding: 0 8px;
  }

  .article-header h1 {
    width: 100%;
    max-width: calc(100vw - 56px);
    font-size: 28px;
    line-height: 1.28;
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  .article-meta {
    display: grid;
    grid-template-columns: 1fr;
  }

  .article-description {
    max-width: 100%;
    font-size: 16px;
    line-height: 1.75;
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  .article-content h2 {
    margin-top: 42px;
    font-size: 25px;
  }

  .article-content,
  .article-content p,
  .article-content li {
    max-width: 100%;
    font-size: 16px;
    line-height: 1.75;
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  .article-figure img {
    max-width: 100%;
  }

  .article-content .article-031-table th,
  .article-content .article-031-table td {
    padding: 10px 11px;
    font-size: 0.88rem;
    line-height: 1.55;
  }

  .table-scroll-helper {
    font-size: 0.86rem;
  }

  .article031-table-desktop {
    display: none;
  }

  .article031-card-helper {
    display: block;
    margin: 0.8rem 0 0.45rem;
    color: var(--subtext);
    font-size: 0.86rem;
    line-height: 1.6;
  }

  .article031-mobile-cards {
    display: grid;
    gap: 1rem;
  }

  .article031-card {
    padding: 14px;
  }

  .article031-card-title {
    font-size: 1.02rem;
  }

  .article031-card-row {
    grid-template-columns: minmax(5.75rem, 36%) minmax(0, 1fr);
    gap: 0.65rem;
  }

  .article031-card-label,
  .article031-card-value {
    word-break: keep-all;
    overflow-wrap: normal;
    line-break: strict;
  }

  .info-box,
  .disclaimer-box,
  .source-box,
  .notice-card,
  .content-panel {
    padding: 18px;
  }

  .article034-source-note-card {
    margin-top: 16px;
    padding: 6px;
    border-radius: 14px;
  }

  .article034-source-note-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    padding: 14px;
  }

  .article034-source-note-row dt {
    font-size: 0.78rem;
  }

  .article034-source-note-row dd {
    font-size: 0.94rem;
    line-height: 1.75;
  }

  .merqilo-data-freshness .data-freshness-table {
    overflow-x: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .merqilo-data-freshness table,
  .merqilo-data-freshness tbody,
  .merqilo-data-freshness tr,
  .merqilo-data-freshness td {
    display: block;
    width: 100%;
    min-width: 0;
  }

  .merqilo-data-freshness table {
    background: transparent;
  }

  .merqilo-data-freshness thead {
    display: none;
  }

  .merqilo-data-freshness tbody {
    display: grid;
    gap: 12px;
  }

  .merqilo-data-freshness tr {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    padding: 12px 14px;
  }

  .merqilo-data-freshness td {
    border: 0;
    padding: 0;
    text-align: left;
    word-break: normal;
    line-break: strict;
    overflow-wrap: break-word;
  }

  .merqilo-data-freshness td:first-child {
    margin-bottom: 4px;
    color: var(--primary-dark);
    font-weight: 800;
    white-space: normal;
  }

  .data-source-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 880px) {
  .about-hero-grid,
  .about-principle-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .about-hero {
    padding: 68px 0 48px;
  }

  .about-hero-copy p:not(.eyebrow):not(.hero-lead) {
    font-size: 16px;
    line-height: 1.75;
  }

  .about-content {
    gap: 20px;
  }

  .about-meaning {
    padding: 18px 0 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .button:hover,
  .card:hover,
  .card:focus-within,
  .hero-visual-shell:hover,
  .hero-visual-shell:focus-within,
  .data-item:hover,
  .data-item:focus-within,
  .notice-card:hover,
  .notice-card:focus-within,
  .content-panel:hover,
  .content-panel:focus-within,
  .about-card:hover,
  .about-card:focus-within {
    transform: none;
  }

  .hero::before,
  .about-hero::before {
    transform: none;
  }
}