:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-raised: #fbfbfd;
  --surface-muted: #eef1f5;
  --ink: #151518;
  --text: #303136;
  --muted: #696e78;
  --accent: #0a66c2;
  --accent-dark: #084c91;
  --accent-soft: #e8f3ff;
  --teal: #0b7f7a;
  --teal-soft: #e6f5f3;
  --line: rgba(21, 21, 24, 0.1);
  --line-strong: rgba(21, 21, 24, 0.16);
  --shadow: 0 22px 70px rgba(20, 25, 32, 0.1);
  --radius: 8px;
  --max-width: 1180px;
  --media-ratio: 1672 / 941;
  --font-sans: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, #fbfbfd 0, var(--bg) 560px),
    var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.78;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(10, 102, 194, 0.26);
  outline-offset: 4px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
p,
li {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  font-size: 5.25rem;
  font-weight: 800;
  line-height: 1.04;
}

h2 {
  font-size: 2.65rem;
  font-weight: 700;
  line-height: 1.16;
}

h3 {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.45;
}

.icon,
.brand-mark svg {
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon {
  width: 1.1rem;
  height: 1.1rem;
  stroke-width: 1.8;
}

.icon-sm {
  width: 1rem;
  height: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 12px max(24px, calc((100vw - var(--max-width)) / 2));
  background: rgba(251, 251, 253, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(24px) saturate(1.35);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #32343a, #111216);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.brand-mark svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.9;
}

.site-nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: rgba(21, 21, 24, 0.68);
  font-size: 0.9rem;
  font-weight: 600;
}

.site-nav a,
.footer-links a {
  position: relative;
  padding: 7px 0;
}

.site-nav a::after,
.footer-links a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  content: "";
  background: currentColor;
  opacity: 0;
  transform: scaleX(0.7);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.site-nav a:hover::after,
.footer-links a:hover::after {
  opacity: 0.46;
  transform: scaleX(1);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 58px 56px;
  align-items: center;
  width: min(100% - 48px, var(--max-width));
  min-height: calc(82svh - 57px);
  margin: 0 auto;
  padding: 72px 0 54px;
}

.hero-content {
  position: relative;
  z-index: 1;
  min-width: 0;
  max-width: 630px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lead {
  max-width: 590px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 700;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 22px rgba(10, 102, 194, 0.18);
}

.button.primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--line);
  color: var(--ink);
}

.button.secondary:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.hero-visual {
  position: relative;
  min-width: 0;
  aspect-ratio: var(--media-ratio);
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-visual::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(245, 246, 248, 0.24), rgba(245, 246, 248, 0) 45%);
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: 0 12px 36px rgba(20, 25, 32, 0.05);
}

.hero-metrics div {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
  min-height: 112px;
  padding: 23px 24px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
}

.metric-icon {
  display: grid;
  grid-row: 1 / 3;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.metric-icon .icon {
  width: 20px;
  height: 20px;
}

.hero-metrics strong,
.hero-metrics span:not(.metric-icon) {
  display: block;
}

.hero-metrics strong {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.hero-metrics span:not(.metric-icon) {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.section {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
  padding: 104px 0;
}

.section.muted {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100vw - var(--max-width)) / 2));
  padding-left: max(24px, calc((100vw - var(--max-width)) / 2));
  background: var(--surface-muted);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 38px;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.theme-card {
  display: flex;
  flex-direction: column;
  min-height: 266px;
  overflow: hidden;
  padding: 0;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(20, 25, 32, 0.04);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.theme-card:hover {
  border-color: rgba(10, 102, 194, 0.22);
  box-shadow: 0 18px 42px rgba(20, 25, 32, 0.07);
  transform: translateY(-2px);
}

.theme-card-image {
  aspect-ratio: var(--media-ratio);
  overflow: hidden;
  margin: 0;
  background: var(--surface-muted);
}

.theme-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.theme-card-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.theme-card:nth-child(2) .card-icon {
  background: var(--teal-soft);
  color: var(--teal);
}

.theme-card:nth-child(3) .card-icon {
  background: #eff0f3;
  color: #3f444d;
}

.card-icon .icon {
  width: 21px;
  height: 21px;
}

.theme-card p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.8;
}

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

.article-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 24px 26px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition:
    background 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.article-item h3 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.article-item:hover {
  border-color: rgba(10, 102, 194, 0.26);
  background: #fff;
  transform: translateY(-1px);
}

.article-item.is-upcoming {
  color: rgba(48, 49, 54, 0.72);
}

.article-item.is-upcoming:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.8);
  transform: none;
}

.category {
  margin: 0 0 7px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
}

.article-side {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
}

.article-item time {
  flex: 0 0 auto;
  font-size: 0.9rem;
  font-weight: 500;
}

.article-arrow {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-dark);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 5px 11px;
  border: 1px solid rgba(90, 96, 108, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: #5a606c;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.policy-layout,
.disclaimer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 36px;
  align-items: start;
  padding-top: 4px;
}

.policy p,
.disclaimer p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.95;
}

.policy-points,
.disclaimer-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.policy-points li,
.disclaimer-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.85;
}

.policy-points li::before,
.disclaimer-list li::before {
  position: absolute;
  top: 0.88em;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--accent);
}

.disclaimer {
  padding-top: 84px;
  border-top: 1px solid var(--line);
}

.disclaimer-list li::before {
  background: var(--teal);
}

.site-footer {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
  padding: 32px 0 46px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  font-size: 0.94rem;
}

.footer-note {
  max-width: 880px;
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  line-height: 1.85;
}

.copyright {
  margin: 18px 0 0;
  font-size: 0.85rem;
}

.article-page {
  width: min(100% - 48px, 920px);
  margin: 0 auto;
  padding: 64px 0 96px;
}

.article-body {
  color: var(--text);
}

.article-hero {
  padding-bottom: 38px;
  border-bottom: 1px solid var(--line);
}

.article-hero h1 {
  max-width: 900px;
  font-size: 4rem;
  line-height: 1.14;
}

.article-lead {
  max-width: 820px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 2;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

.article-figure {
  margin: 38px 0 52px;
}

.article-image-frame {
  aspect-ratio: var(--media-ratio);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(20, 25, 32, 0.08);
}

.article-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.article-figure figcaption {
  margin-top: 11px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

.toc {
  margin: 38px 0 62px;
  padding: 24px 26px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toc p {
  margin: 0 0 12px;
  color: var(--ink);
  font-weight: 700;
}

.toc ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px 28px;
  margin: 0;
  padding-left: 1.35em;
  color: var(--muted);
}

.toc a {
  color: var(--text);
}

.toc a:hover {
  color: var(--accent);
}

.article-body section {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.article-body section:first-of-type {
  border-top: 0;
}

.article-body h2 {
  margin-bottom: 26px;
  font-size: 2.15rem;
  line-height: 1.25;
}

.article-body h3 {
  margin: 38px 0 12px;
  font-size: 1.18rem;
}

.article-body h2 + h3 {
  margin-top: 0;
}

.article-body p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 2;
}

.article-body p + p {
  margin-top: 1.08em;
}

.article-body p + h3,
.article-body ul + h3,
.note-box + h3 {
  margin-top: 42px;
}

.article-body strong {
  color: var(--ink);
  font-weight: 700;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 22px 0 28px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 13px 16px 13px 44px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  line-height: 1.75;
}

.check-list li::before {
  position: absolute;
  top: 1.08em;
  left: 18px;
  width: 10px;
  height: 6px;
  content: "";
  border-bottom: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
  transform: rotate(-45deg);
}

.note-box {
  margin: 26px 0 32px;
  padding: 20px 22px;
  background: var(--accent-soft);
  border: 1px solid rgba(10, 102, 194, 0.16);
  border-radius: var(--radius);
}

.note-box p {
  margin: 0;
}

.source-list {
  display: grid;
  gap: 11px;
  margin: 20px 0 0;
  padding-left: 1.25em;
}

.source-list a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-disclaimer {
  display: flex;
  gap: 15px;
  margin-top: 12px;
  padding: 20px 22px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
}

.disclaimer-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--teal-soft);
  color: var(--teal);
}

.article-disclaimer-title {
  margin: 0 0 5px;
  color: var(--ink);
  font-weight: 700;
}

.article-disclaimer p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
}

@media (max-width: 1080px) {
  h1 {
    font-size: 4.55rem;
  }

  .hero {
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
    gap: 46px;
  }
}

@media (max-width: 920px) {
  h1 {
    font-size: 4.05rem;
  }

  h2 {
    font-size: 2.35rem;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 54px 0 58px;
  }

  .hero-content {
    max-width: 760px;
  }

  .hero-metrics,
  .theme-grid,
  .policy-layout,
  .disclaimer-layout {
    grid-template-columns: 1fr;
  }

  .theme-card {
    min-height: auto;
  }

  .card-icon {
    margin-bottom: 22px;
  }

  .article-hero h1 {
    font-size: 3.25rem;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .site-nav,
  .footer-links {
    width: 100%;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 2px;
    white-space: nowrap;
  }

  .article-item,
  .footer-top {
    align-items: flex-start;
    grid-template-columns: 1fr;
    flex-direction: column;
    gap: 14px;
  }

  .toc ol {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .site-header,
  .section.muted {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero,
  .section,
  .site-footer,
  .article-page {
    width: min(100% - 36px, var(--max-width));
  }

  .hero {
    padding-top: 40px;
  }

  h1 {
    font-size: 2.9rem;
  }

  h2,
  .article-body h2 {
    font-size: 2rem;
  }

  .lead,
  .article-lead {
    font-size: 1.02rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .button {
    min-height: 46px;
  }

  .hero-metrics div,
  .article-item,
  .toc,
  .article-disclaimer {
    padding: 20px;
  }

  .theme-card-content {
    padding: 20px;
  }

  .article-side {
    width: 100%;
    justify-content: space-between;
  }

  .article-figure {
    margin: 28px 0 42px;
  }

  .article-hero h1 {
    font-size: 2.35rem;
  }

  .article-body p {
    font-size: 1rem;
  }

  .article-disclaimer {
    flex-direction: column;
  }
}