:root {
  --ink: #06172b;
  --muted: #66717f;
  --line: rgba(6, 23, 43, 0.14);
  --paper: #f7f8f8;
  --white: #ffffff;
  --accent: #705219;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Yu Gothic", Meiryo, serif;
  line-height: 2;
  letter-spacing: 0;
  overflow-x: hidden;
}

body,
button,
input,
textarea {
  font: inherit;
}

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

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 24px;
  z-index: 200;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
}

.skip-link:focus {
  top: 18px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(6, 23, 43, 0.08);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 36px;
}

.brand {
  display: grid;
  gap: 3px;
  min-width: 210px;
  line-height: 1.25;
}

.brand strong {
  font-family: Georgia, "Times New Roman", "Yu Mincho", serif;
  font-size: 22px;
  font-weight: 600;
}

.brand span {
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.menu-button {
  display: none;
  min-height: 44px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid currentColor;
  cursor: pointer;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 24px;
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.site-nav a {
  padding: 8px 0;
  border-bottom: 1px solid transparent;
}

.site-nav a:hover {
  border-color: currentColor;
}

.site-nav .nav-action {
  color: var(--accent);
}

.page-shell {
  min-height: 100vh;
}

.hero {
  display: grid;
  align-items: center;
  min-height: clamp(620px, 78vh, 820px);
  padding: clamp(96px, 13vw, 172px) 36px clamp(76px, 9vw, 120px);
}

.sub-hero {
  min-height: clamp(440px, 56vh, 650px);
}

.hero-inner,
.section-inner,
.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
}

.hero-copy {
  max-width: 900px;
}

.eyebrow {
  margin: 0 0 26px;
  color: var(--accent);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 500;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(54px, 8vw, 118px);
  line-height: 1.08;
}

.sub-hero h1 {
  font-size: clamp(46px, 7vw, 96px);
}

h1 span,
h2 span {
  display: block;
}

.hero-lead {
  max-width: 760px;
  margin: 36px 0 0;
  font-size: clamp(18px, 2vw, 25px);
  line-height: 2;
}

.section {
  padding: clamp(88px, 11vw, 150px) 36px;
  border-top: 1px solid var(--line);
  content-visibility: auto;
  contain-intrinsic-size: auto 720px;
}

.section.quiet {
  background: var(--paper);
}

.section.narrow .section-inner {
  max-width: 840px;
}

.section-lead {
  max-width: 820px;
  margin: 0;
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1.75;
}

.body-copy {
  display: grid;
  gap: 22px;
  max-width: 760px;
}

.body-copy p {
  margin: 0;
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 2.1;
}

.section-heading {
  margin-bottom: 34px;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.28;
}

.section-header {
  display: grid;
  gap: 12px;
  max-width: 820px;
  margin-bottom: 34px;
}

.section-header .section-heading {
  margin-bottom: 0;
}

.section-note {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 14px;
  line-height: 1.9;
}

.insights-preview {
  display: grid;
  gap: 26px;
  max-width: 900px;
}

.insights-preview__empty,
.empty-state {
  display: grid;
  gap: 8px;
  max-width: 760px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.insights-preview__empty p,
.empty-state p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 2;
}

.insights-list {
  display: grid;
  gap: 0;
  max-width: 860px;
  border-top: 1px solid var(--line);
}

.insights-list--preview {
  max-width: 900px;
}

.insights-item {
  display: grid;
  gap: 12px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.insights-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
}

.insights-item h2,
.insights-item h3 {
  margin: 0;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.42;
}

.insights-item--compact h3 {
  font-size: clamp(20px, 2.4vw, 30px);
}

.insights-item p:not(.insights-item__meta) {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 2;
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.category-list li {
  padding: 7px 12px;
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--line);
}

.article-page .section {
  content-visibility: visible;
  contain-intrinsic-size: auto;
}

.article-hero {
  padding: clamp(88px, 11vw, 150px) 36px clamp(56px, 7vw, 96px);
  border-top: 1px solid var(--line);
}

.article-hero h1 {
  max-width: 940px;
  font-size: clamp(42px, 6vw, 84px);
  line-height: 1.18;
}

.article-summary {
  max-width: 760px;
  margin: 32px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 2;
}

.article-meta {
  display: grid;
  max-width: 760px;
  margin: 38px 0 0;
  border-top: 1px solid var(--line);
}

.article-meta div {
  display: grid;
  grid-template-columns: minmax(120px, 0.24fr) minmax(0, 1fr);
  gap: 22px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.article-meta dt {
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.article-meta dd {
  margin: 0;
}

.article-body {
  display: grid;
  gap: 24px;
  max-width: 760px;
}

.article-body h2 {
  margin-top: 28px;
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1.35;
}

.article-body p {
  margin: 0;
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 2.15;
}

.article-related {
  display: grid;
  gap: 14px;
  max-width: 760px;
  margin: 0 0 32px;
  padding-left: 1.2em;
}

.article-related li {
  line-height: 1.8;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(320px, 0.42fr);
  gap: clamp(42px, 7vw, 96px);
  align-items: start;
}

.portrait {
  margin: 0;
  border-left: 1px solid var(--line);
  padding-left: 34px;
}

.portrait img {
  width: 100%;
  height: auto;
  filter: saturate(0.96) contrast(1.02);
}

.portrait figcaption {
  margin-top: 18px;
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
  margin-top: 44px;
}

.text-link,
.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.text-link {
  color: var(--accent);
  border-bottom: 1px solid currentColor;
}

.button {
  justify-content: center;
  min-width: 154px;
  padding: 12px 26px;
  color: var(--white);
  background: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  color: var(--ink);
  background: var(--white);
  transform: translateY(-1px);
}

.facts {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--line);
}

.facts div {
  display: grid;
  grid-template-columns: minmax(170px, 0.28fr) minmax(0, 1fr);
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.facts dd {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 20px);
}

.breadcrumb {
  padding: 18px 36px 0;
  color: var(--muted);
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
}

.form-grid {
  display: grid;
  gap: 22px;
  max-width: 760px;
}

.field {
  display: grid;
  gap: 8px;
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  min-height: 52px;
  padding: 13px 14px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid rgba(6, 23, 43, 0.24);
  border-radius: 0;
}

.field textarea {
  min-height: 180px;
  resize: vertical;
}

.form-consent {
  display: grid;
  gap: 8px;
  padding-top: 4px;
  font-family: "Yu Gothic", Meiryo, sans-serif;
}

.consent-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.8;
}

.consent-field input[type="checkbox"] {
  width: 1.2em;
  min-width: 1.2em;
  height: 1.2em;
  margin: 0.25em 0 0;
  padding: 0;
  accent-color: var(--ink);
}

.consent-field a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.required-mark {
  display: inline-block;
  margin-left: 8px;
  color: var(--accent);
  font-size: 12px;
}

.field-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.site-footer {
  padding: 54px 36px;
  color: rgba(255, 255, 255, 0.84);
  background: var(--ink);
}

.footer-inner {
  display: grid;
  gap: 28px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-family: "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
}

.footer-company {
  display: grid;
  gap: 6px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
}

@media (max-width: 900px) {
  .header-inner {
    align-items: start;
    padding: 18px 22px;
  }

  .menu-button {
    display: inline-flex;
    align-items: center;
  }

  .js .site-nav {
    display: none;
  }

  .js .site-nav.is-open {
    display: grid;
  }

  .site-nav {
    grid-column: 1 / -1;
    width: 100%;
    justify-content: start;
    gap: 4px;
    padding-top: 16px;
  }

  .site-nav a {
    display: block;
    padding: 10px 0;
  }

  .header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .portrait {
    max-width: 420px;
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 560px) {
  .hero,
  .section,
  .breadcrumb {
    padding-left: 22px;
    padding-right: 22px;
  }

  .hero {
    min-height: 580px;
  }

  h1 {
    font-size: clamp(37px, 10.8vw, 48px);
  }

  .sub-hero h1 {
    font-size: clamp(36px, 10.5vw, 46px);
  }

  .facts div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .article-meta div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .button {
    width: 100%;
  }
}

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