:root {
  color-scheme: light;
  --ink-950: #061739;
  --ink-900: #0a2148;
  --ink-800: #18365f;
  --ink-700: #365579;
  --ink-600: #5e7592;
  --ink-500: #7f93aa;
  --blue-700: #074fd2;
  --blue-600: #0966ef;
  --blue-100: #eaf2ff;
  --blue-050: #f5f9ff;
  --teal-700: #087f86;
  --teal-600: #0b9aa0;
  --teal-100: #e5f7f7;
  --paper: #ffffff;
  --canvas: #fbfdff;
  --line: #d9e4f0;
  --line-strong: #c2d2e5;
  --warning: #9a5200;
  --warning-bg: #fff7e7;
  --danger: #9e323a;
  --danger-bg: #fff3f3;
  --shadow-sm: 0 8px 24px rgba(9, 44, 96, 0.07);
  --shadow-md: 0 20px 55px rgba(9, 44, 96, 0.1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --container: 1376px;
  --reading: 780px;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink-900);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.78;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue-700);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover { color: var(--blue-600); }

a:focus-visible,
button:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid #ffae00;
  outline-offset: 4px;
  border-radius: 6px;
}

h1, h2, h3, p, ul, ol { overflow-wrap: anywhere; }

h1, h2, h3 {
  margin-top: 0;
  color: var(--ink-950);
  font-weight: 780;
  letter-spacing: -0.035em;
  line-height: 1.34;
  text-wrap: balance;
}

h1 { font-size: 2.55rem; font-size: clamp(2.55rem, 5vw, 4.85rem); }
h2 { font-size: 1.65rem; font-size: clamp(1.65rem, 3vw, 2.55rem); }
h3 { font-size: 1.08rem; font-size: clamp(1.08rem, 1.8vw, 1.28rem); }

p { margin: 0 0 1.15em; }
ul, ol { padding-left: 1.35em; }
li + li { margin-top: 0.5em; }

.container {
  width: calc(100% - 5rem);
  max-width: var(--container);
  margin-inline: auto;
}

.reading-width { max-width: var(--reading); }

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--ink-950);
  border-radius: 8px;
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.utility-bar { display: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;
  color: var(--ink-950);
  font-size: 1.3rem;
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1.2;
  text-decoration: none;
}

.brand:hover { color: var(--ink-950); }

.brand__mark {
  width: 68px;
  height: 68px;
  object-fit: contain;
  border-radius: 50%;
}

.brand__text small {
  display: block;
  margin-top: 0.1rem;
  color: var(--ink-600);
  font-size: 0.62rem;
  font-weight: 720;
  letter-spacing: 0.04em;
}

.site-nav { min-width: 0; }

.site-nav ul {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  list-style: none;
}

.site-nav li { margin: 0; }

.site-nav a {
  position: relative;
  min-height: 88px;
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1rem;
  color: var(--ink-900);
  font-size: 0.9rem;
  font-weight: 720;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a:hover { color: var(--blue-600); }

.site-nav a[aria-current="page"] { color: var(--blue-600); }

.site-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0.8rem;
  bottom: -1px;
  left: 0.8rem;
  height: 3px;
  background: var(--blue-600);
  content: "";
}

.disclosure-bar {
  margin: 0;
  padding: 0.58rem 1rem;
  color: var(--ink-700);
  background: var(--blue-050);
  border-bottom: 1px solid #e4edf8;
  font-size: 0.78rem;
  text-align: center;
}

.disclosure-bar::before {
  width: 1.1rem;
  height: 1.1rem;
  margin-right: 0.45rem;
  display: inline-block;
  background: url("../images/site-2026/icons/info-circle-fill.svg") center / contain no-repeat;
  vertical-align: -0.23em;
  filter: invert(35%) sepia(96%) saturate(2914%) hue-rotate(209deg) brightness(94%) contrast(100%);
  content: "";
}

.breadcrumb {
  padding-block: 1rem;
  color: var(--ink-600);
  font-size: 0.8rem;
}

.breadcrumb ol {
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.breadcrumb li { margin: 0; }
.breadcrumb li + li::before { margin-right: 0.4rem; color: var(--ink-500); content: "/"; }

.page-main { padding-bottom: 5rem; }

.hero {
  background: var(--paper);
}

.hero__inner {
  min-height: 530px;
  display: grid;
  grid-template-columns: minmax(390px, 1.02fr) minmax(330px, 0.95fr) minmax(300px, 0.67fr);
  align-items: center;
  gap: 2rem;
  padding: 2.6rem 0 3rem;
}

.hero__copy { min-width: 0; }

.eyebrow {
  width: fit-content;
  margin: 0 0 1.2rem;
  padding: 0.36rem 0.78rem;
  color: var(--blue-600);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 820;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 8.8em;
  margin-bottom: 1.15rem;
  font-size: 2.55rem;
  font-size: clamp(2.55rem, 4.3vw, 4rem);
}

.hero__lead {
  max-width: 40rem;
  margin-bottom: 1.6rem;
  color: var(--ink-800);
  font-size: 0.98rem;
  font-size: clamp(0.98rem, 1.35vw, 1.08rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.15rem;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.78rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 780;
  text-decoration: none;
}

.button img { width: 1.25rem; height: 1.25rem; filter: brightness(0) invert(1); }
.button--primary { color: #fff; background: var(--blue-600); box-shadow: 0 8px 18px rgba(9, 102, 239, 0.2); }
.button--primary:hover { color: #fff; background: var(--blue-700); }
.button--ghost { min-height: 44px; padding-inline: 0.3rem; color: var(--blue-700); border-bottom: 2px solid var(--blue-600); border-radius: 0; }
.button--ghost:hover { color: var(--blue-600); }

.hero__visual {
  position: relative;
  min-width: 0;
  margin: 0;
}

.hero__visual img {
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
}

.compass-label {
  position: absolute;
  color: var(--ink-800);
  font-size: 0.78rem;
  font-weight: 720;
  white-space: nowrap;
}

.compass-label--top { top: 8%; left: 52%; transform: translateX(-50%); }
.compass-label--right { top: 43%; right: -1rem; }
.compass-label--bottom { right: 11%; bottom: 5%; }
.compass-label--left { bottom: 17%; left: -0.5rem; }

.hero__panel {
  min-width: 0;
  padding: 0 0 0 2rem;
  border-left: 1px solid var(--line-strong);
}

.hero__panel h2 {
  position: relative;
  margin-bottom: 1.7rem;
  padding-bottom: 0.8rem;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}

.hero__panel h2::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 3rem;
  height: 3px;
  background: var(--blue-600);
  content: "";
}

.criteria-feature {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.75rem;
  margin-bottom: 1.3rem;
}

.criteria-feature > img {
  width: 2rem;
  height: 2rem;
  padding: 0.2rem;
  filter: invert(45%) sepia(92%) saturate(902%) hue-rotate(134deg) brightness(83%) contrast(101%);
}

.criteria-feature h3 { margin-bottom: 0.25rem; font-size: 0.93rem; }
.criteria-feature p { margin: 0; color: var(--ink-600); font-size: 0.76rem; }

.hero__panel dl { margin: 1.5rem 0 0; border-top: 1px solid var(--line); }

.hero__panel dl > div {
  display: grid;
  grid-template-columns: 7em 1fr;
  gap: 0.8rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
}

.hero__panel dt { color: var(--ink-600); font-size: 0.73rem; }
.hero__panel dd { margin: 0; color: var(--ink-900); font-size: 0.75rem; font-weight: 720; }

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: var(--blue-050);
  border-block: 1px solid var(--line);
}

.trust-strip__item { padding: 1rem 1.25rem; }
.trust-strip__item + .trust-strip__item { border-left: 1px solid var(--line); }
.trust-strip strong { display: block; color: var(--ink-950); font-size: 0.84rem; }
.trust-strip span { color: var(--ink-600); font-size: 0.74rem; }

.section { padding-top: 5rem; }
.section--compact { padding-top: 2.5rem; }

.learning-section {
  margin-top: 0;
  padding-block: 2.2rem 2.8rem;
  background: var(--blue-050);
  box-shadow: 0 0 0 100vmax var(--blue-050);
  clip-path: inset(0 -100vmax);
}

.section__head {
  max-width: 780px;
  margin-bottom: 1.8rem;
}

.section__head .eyebrow {
  margin-bottom: 0.75rem;
  padding: 0;
  color: var(--blue-600);
  background: transparent;
  border: 0;
  border-radius: 0;
}

.section__head h2 { margin-bottom: 0.65rem; }
.section__head p { color: var(--ink-600); }

.learning-head {
  margin-bottom: 1.4rem;
  display: flex;
  align-items: baseline;
  gap: 2.5rem;
}

.learning-head h2 { margin-bottom: 0; font-size: 1.45rem; }
.learning-head p { margin: 0; color: var(--ink-600); font-size: 0.82rem; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card-grid--four > .card:not(:last-child)::after {
  content: "";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -1.2rem;
  width: 1.4rem;
  height: 1.4rem;
  background: #dbe6f2 url("../images/site-2026/icons/arrow-right.svg") center / 0.78rem no-repeat;
  border: 3px solid var(--ice);
  border-radius: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.card {
  position: relative;
  min-width: 0;
  padding: 1.35rem;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
}

a.card {
  color: inherit;
  text-decoration: none;
  transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
}

a.card:hover { color: inherit; border-color: #9cb7d7; box-shadow: var(--shadow-sm); transform: translateY(-2px); }

.card__number {
  width: 2.55rem;
  height: 2.55rem;
  margin-bottom: 1rem;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue-600);
  border-radius: 50%;
  font-size: 0.95rem;
  font-weight: 850;
}

.card:nth-child(even) .card__number { background: var(--teal-600); }
.card h3 { margin-bottom: 0.5rem; }
.card p { margin: 0; color: var(--ink-700); font-size: 0.84rem; }
.card__link { margin-top: 0.9rem; display: inline-flex; color: var(--blue-700); font-size: 0.78rem; font-weight: 760; }
.card__time { margin-top: 1rem; padding: 0.42rem 0.55rem; color: var(--blue-700); background: var(--blue-050); border-radius: 6px; font-size: 0.72rem; text-align: center; }
.card:nth-child(even) .card__time { color: var(--teal-700); background: var(--teal-100); }

.learning-note {
  margin: 1.25rem 0 0;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  color: var(--ink-700);
  background: #e2edff;
  border-radius: 6px;
  font-size: 0.76rem;
}

.learning-note img {
  width: 1.1rem;
  height: 1.1rem;
  filter: invert(38%) sepia(90%) saturate(2735%) hue-rotate(202deg) brightness(96%) contrast(95%);
}

.topic-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  list-style: none;
}

.topic-list li { margin: 0; }
.topic-list a {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  color: var(--ink-900);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-weight: 720;
  text-decoration: none;
}
.topic-list a::after { color: var(--blue-600); content: "→"; }
.topic-list a:hover { border-color: #9cb7d7; box-shadow: var(--shadow-sm); }

.table-wrap {
  overflow-x: auto;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

table { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
caption { padding: 1rem 1.2rem; color: var(--ink-700); font-size: 0.8rem; text-align: left; }
th, td { padding: 0.95rem 1.1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-950); background: var(--blue-050); font-size: 0.8rem; letter-spacing: 0.025em; }
td { color: var(--ink-700); font-size: 0.86rem; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #fbfdff; }

.callout {
  padding: 1.5rem 1.65rem;
  background: var(--teal-100);
  border: 1px solid #b9e4e5;
  border-left: 5px solid var(--teal-600);
  border-radius: var(--radius-sm);
}
.callout--warning { background: var(--warning-bg); border-color: #f0d49b; border-left-color: var(--warning); }
.callout--danger { background: var(--danger-bg); border-color: #efc7cb; border-left-color: var(--danger); }
.callout h2, .callout h3 { margin-bottom: 0.55rem; font-size: 1.12rem; letter-spacing: 0; }
.callout p:last-child { margin-bottom: 0; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.25rem;
  align-items: start;
}

.prose-card { padding: 1.8rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-md); }
.prose-card h2 { font-size: 1.35rem; letter-spacing: -0.02em; }
.prose-card > :last-child { margin-bottom: 0; }

.source-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
  list-style: none;
}
.source-list li { margin: 0; }
.source-list a { display: block; padding: 0.88rem 1rem; color: var(--ink-800); background: var(--paper); border: 1px solid var(--line); border-radius: 9px; font-size: 0.86rem; font-weight: 680; text-decoration: none; }
.source-list a:hover { border-color: #9cb7d7; color: var(--blue-700); }

.site-footer { color: #cbd9e8; background: var(--ink-950); }

.site-footer__inner {
  padding-block: 3.25rem 2rem;
  display: grid;
  grid-template-columns: 1.1fr 1.9fr;
  gap: 3rem;
}

.site-footer .brand { color: #fff; }
.site-footer .brand__text small { color: #91a7bf; }
.site-footer__intro { max-width: 28rem; margin-top: 1rem; color: #98adc2; font-size: 0.8rem; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.footer-nav h2 { margin-bottom: 0.7rem; color: #fff; font-size: 0.78rem; letter-spacing: 0.05em; }
.footer-nav ul { margin: 0; padding: 0; list-style: none; }
.footer-nav li { margin: 0.3rem 0; }
.footer-nav a { color: #cbd9e8; font-size: 0.8rem; text-decoration: none; }
.footer-nav a:hover { color: #fff; text-decoration: underline; }

.site-footer__bottom {
  padding-block: 1rem 1.4rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: #7f98b0;
  border-top: 1px solid #263c5b;
  font-size: 0.7rem;
}
.site-footer__bottom p { margin: 0; }

@media (max-width: 1180px) {
  .container { width: calc(100% - 2.5rem); }
  .site-nav a { padding-inline: 0.65rem; font-size: 0.84rem; }
  .hero__inner { grid-template-columns: minmax(360px, 1fr) minmax(300px, 0.85fr); }
  .hero__panel { grid-column: 1 / -1; padding: 1.5rem 0 0; display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 1rem; border-top: 1px solid var(--line); border-left: 0; }
  .hero__panel h2 { grid-column: 1 / -1; margin-bottom: 0; }
  .hero__panel dl { margin-top: 0; }
  .card-grid--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card-grid--four > .card::after { display: none; }
}

@media (max-width: 820px) {
  .site-header { position: relative; }
  .site-header__inner { min-height: auto; padding-block: 0.75rem 0.25rem; display: block; }
  .brand { margin-left: 0.2rem; }
  .brand__mark { width: 46px; height: 46px; }
  .site-nav { margin-top: 0.55rem; margin-inline: -0.6rem; padding-inline: 0.6rem; overflow-x: auto; scrollbar-width: thin; }
  .site-nav ul { width: max-content; }
  .site-nav a { min-height: 48px; }
  .hero__inner { grid-template-columns: 1fr; gap: 1.75rem; padding-top: 2rem; }
  .hero__copy { max-width: 680px; }
  .hero__visual { max-width: 600px; margin-inline: auto; }
  .hero__panel { grid-template-columns: repeat(2, 1fr); }
  .hero__panel dl { grid-column: 1 / -1; }
  .trust-strip { grid-template-columns: 1fr; }
  .trust-strip__item + .trust-strip__item { border-top: 1px solid var(--line); border-left: 0; }
  .card-grid--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 620px) {
  body { font-size: 15px; line-height: 1.72; }
  .container { width: calc(100% - 1.25rem); }
  .brand { font-size: 1.05rem; }
  .brand__text small { font-size: 0.52rem; }
  .disclosure-bar { font-size: 0.67rem; }
  .breadcrumb { padding-block: 0.7rem; }
  .hero__inner { min-height: 0; padding-bottom: 2rem; }
  .hero h1 { max-width: 10em; }
  .hero__lead { font-size: 0.95rem; }
  .hero__actions { display: grid; }
  .button { width: 100%; }
  .button--ghost { width: fit-content; justify-self: start; }
  .hero__visual img { max-width: 410px; }
  .compass-label { display: none; }
  .hero__panel { grid-template-columns: 1fr; padding-top: 1.25rem; }
  .hero__panel h2, .hero__panel dl { grid-column: auto; }
  .hero__panel dl > div { grid-template-columns: 1fr; gap: 0.05rem; }
  .learning-section { padding-block: 1.8rem 2.2rem; }
  .learning-note { align-items: flex-start; justify-content: flex-start; }
  .learning-head { display: block; }
  .learning-head h2 { margin-bottom: 0.35rem; }
  .section { padding-top: 3.5rem; }
  .section--compact { padding-top: 2rem; }
  .card-grid, .card-grid--three, .card-grid--four, .topic-list { grid-template-columns: 1fr; }
  .card, .prose-card { padding: 1.2rem; }
  .table-wrap { border-radius: 10px; }
  th, td { padding: 0.8rem 0.85rem; }
  .callout { padding: 1.2rem; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
  .site-footer__bottom { display: block; }
  .site-footer__bottom p + p { margin-top: 0.35rem; }
}

@media (max-width: 420px) {
  .brand__text small { display: none; }
  .footer-nav { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .site-header, .disclosure-bar, .hero__actions, .site-footer { display: none; }
  body { color: #000; background: #fff; font-size: 11pt; }
  .container { width: 100%; max-width: none; }
  .hero__inner { min-height: 0; display: block; padding: 1rem 0; }
  .hero__visual { display: none; }
  .hero__panel { margin-top: 1rem; border: 1px solid #aaa; padding: 1rem; }
  .learning-section { background: #fff; box-shadow: none; clip-path: none; }
  .card, .table-wrap, .prose-card { box-shadow: none; }
}