:root {
  --paper: #fffdf7;
  --ink: #17201d;
  --muted: #69746f;
  --trust: #1f4d5a;
  --soft: #edf3ef;
  --serif: "Noto Serif JP", Georgia, serif;
  --sans: Inter, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 10%, rgba(31, 77, 90, 0.12), transparent 30%),
    linear-gradient(180deg, var(--paper), var(--soft));
  color: var(--ink);
  font-family: var(--sans);
  letter-spacing: 0;
}

.legal-topbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 14px clamp(18px, 5vw, 58px);
  border-bottom: 1px solid rgba(31, 77, 90, 0.12);
  background: #fff;
  box-shadow: 0 14px 38px rgba(23, 32, 29, 0.08);
}

.legal-logo {
  display: flex;
  align-items: center;
  width: 240px;
  height: 68px;
  overflow: hidden;
  background: #fff;
  color: var(--trust);
  font-family: Georgia, serif;
  font-size: 1.18rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

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

.legal-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: clamp(12px, 2.6vw, 28px);
  font-size: 0.76rem;
  font-weight: 900;
}

.legal-nav a {
  color: rgba(23, 32, 29, 0.74);
}

.legal-nav .legal-cta {
  min-height: 42px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--trust);
  color: #fff;
}

main {
  max-width: 900px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 118px 24px 120px;
}

a {
  color: var(--trust);
  font-weight: 800;
  text-decoration: none;
}

.back-link {
  display: inline-flex;
  margin-bottom: 58px;
  padding: 12px 18px;
  border: 1px solid rgba(31, 77, 90, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 14px 34px rgba(31, 77, 90, 0.08);
  backdrop-filter: blur(16px);
}

.category {
  margin: 0 0 18px;
  color: var(--trust);
  font-size: 0.78rem;
  font-weight: 900;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 7vw, 5rem);
  line-height: 1.16;
}

h2 {
  margin: 38px 0 0;
  color: var(--trust);
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.55;
}

p {
  max-width: 720px;
  margin: 34px 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.95;
}

.article-card {
  margin-top: 54px;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 22px;
  background:
    radial-gradient(circle at 18% 0%, rgba(255, 255, 255, 0.96), transparent 34%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.34));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.84), 0 28px 70px rgba(31, 77, 90, 0.14);
  backdrop-filter: blur(22px) saturate(1.26);
}

.article-card h2:first-child,
.article-card p:first-child {
  margin-top: 0;
}

.article-card ul {
  margin: 28px 0 0;
  padding-left: 1.2em;
  color: var(--muted);
  font-family: var(--serif);
  line-height: 1.9;
}

.article-card li + li {
  margin-top: 10px;
}

.terms-card {
  max-width: 980px;
  margin-inline: auto;
}

.terms-document {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(0.92rem, 2.4vw, 1.02rem);
  line-height: 1.95;
}

@media (max-width: 980px) {
  .legal-topbar {
    padding: 12px 16px;
  }

  .legal-nav {
    gap: 12px;
  }

  .legal-nav a:not(.legal-cta) {
    display: none;
  }

  .legal-logo {
    width: 170px;
    height: 58px;
  }

}

/* Article pages --------------------------------------------------------- */
body.article-page {
  --article-max: 1120px;
  margin: 0;
  color: var(--ink);
  background: #fbfaf6;
  font-family: Inter, "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body.article-page main {
  max-width: none;
  margin: 0;
  padding: 0;
}

.article-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(23, 32, 29, 0.12);
  background: #fff;
}

.article-header-inner {
  width: min(var(--article-max), calc(100% - 40px));
  min-height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.article-logo {
  display: inline-flex;
  width: 224px;
  height: 56px;
  overflow: hidden;
  background: #fff;
}

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

.article-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 18px;
  margin-left: auto;
  font-size: 13px;
  font-weight: 800;
}

.article-nav a {
  color: rgba(23, 32, 29, 0.72);
}

.article-nav a:hover,
.article-nav a[aria-current="page"] {
  color: var(--ink);
}

.article-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  color: #fff !important;
  background: var(--ink);
}

.article-menu {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(23, 32, 29, 0.14);
  border-radius: 999px;
  background: #fff;
}

.article-shell {
  width: min(var(--article-max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(54px, 9vw, 96px) 0 120px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 38px;
  color: rgba(23, 32, 29, 0.56);
  font-size: 12px;
  font-weight: 800;
}

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

.article-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: clamp(28px, 5vw, 70px);
  align-items: end;
  padding-bottom: clamp(46px, 7vw, 72px);
  border-bottom: 1px solid rgba(23, 32, 29, 0.12);
}

.article-kicker {
  margin: 0 0 18px;
  color: var(--trust);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

body.article-page h1 {
  max-width: 850px;
  margin: 0;
  color: var(--ink);
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: clamp(40px, 7vw, 82px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: 0;
}

.article-lede {
  max-width: 760px;
  margin: 28px 0 0;
  color: #53605d;
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: clamp(16px, 1.55vw, 19px);
  font-weight: 600;
  line-height: 2;
}

.article-summary {
  padding: 24px;
  border: 1px solid rgba(23, 32, 29, 0.14);
  border-radius: 8px;
  background: #fff;
}

.article-summary span {
  display: block;
  color: rgba(23, 32, 29, 0.52);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-summary strong {
  display: block;
  margin-top: 12px;
  color: var(--ink);
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: 20px;
  line-height: 1.65;
}

.article-summary p {
  margin: 14px 0 0;
  color: var(--muted);
  font-family: inherit;
  font-size: 13px;
  line-height: 1.9;
}

.article-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(30px, 6vw, 70px);
  align-items: start;
  margin-top: clamp(42px, 7vw, 76px);
}

.article-main {
  min-width: 0;
}

body.article-page .article-card {
  margin: 0 0 22px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(23, 32, 29, 0.12);
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
  backdrop-filter: none;
}

body.article-page .article-card h2 {
  margin: 0 0 18px;
  color: var(--ink);
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: clamp(22px, 2.7vw, 32px);
  font-weight: 900;
  line-height: 1.45;
}

body.article-page .article-card p {
  max-width: 820px;
  margin: 0;
  color: #53605d;
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 2.05;
}

body.article-page .article-card p + p,
body.article-page .article-card ul + p,
body.article-page .article-card p + ul {
  margin-top: 18px;
}

.check-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: #53605d;
  font-family: "Noto Serif JP", Georgia, serif;
  line-height: 1.9;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 12px;
  height: 1px;
  background: var(--trust);
}

.article-side {
  position: sticky;
  top: 106px;
  display: grid;
  gap: 14px;
}

.side-card {
  padding: 20px;
  border: 1px solid rgba(23, 32, 29, 0.12);
  border-radius: 8px;
  background: #fff;
}

.side-card b {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 13px;
}

.side-card a {
  display: block;
  padding: 9px 0;
  border-top: 1px solid rgba(23, 32, 29, 0.08);
  color: #53605d;
  font-size: 13px;
  font-weight: 800;
}

.side-card a:first-of-type {
  border-top: 0;
}

.related-grid,
.all-links-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.all-links-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.article-link-card {
  min-height: 148px;
  padding: 18px;
  border: 1px solid rgba(23, 32, 29, 0.12);
  border-radius: 8px;
  background: #fbfaf6;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.article-link-card:hover {
  transform: translateY(-3px);
  border-color: rgba(31, 77, 90, 0.34);
  background: #fff;
}

.article-link-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--trust);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-link-card strong {
  display: block;
  color: var(--ink);
  font-family: "Noto Serif JP", Georgia, serif;
  font-size: 17px;
  line-height: 1.55;
}

.article-link-card em {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
  line-height: 1.7;
}

.final-article-cta {
  margin-top: 30px;
  padding: clamp(28px, 5vw, 52px);
  border-radius: 8px;
  color: #fff;
  background: #151b1d;
}

.final-article-cta h2 {
  margin: 0;
  color: #fff !important;
}

.final-article-cta p {
  max-width: 720px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.78) !important;
}

.final-article-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  margin-top: 24px;
  padding: 0 20px;
  border-radius: 999px;
  color: #151b1d;
  background: #fff;
}

.quick-actions.article-quick {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  display: grid;
  gap: 10px;
}

.quick-actions.article-quick a,
.quick-actions.article-quick button {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(23, 32, 29, 0.14);
  border-radius: 999px;
  color: var(--ink);
  background: #fff;
}

.quick-actions.article-quick svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 980px) {
  .article-header-inner {
    min-height: 72px;
  }

  .article-logo {
    width: 176px;
    height: 48px;
  }

  .article-menu {
    display: inline-flex;
  }

  .article-nav {
    position: fixed;
    top: 72px;
    right: 16px;
    left: 16px;
    display: none;
    padding: 18px;
    border: 1px solid rgba(23, 32, 29, 0.12);
    border-radius: 8px;
    background: #fff;
  }

  .article-header.is-open .article-nav {
    display: grid;
  }

  .article-nav a {
    padding: 12px 0;
  }

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

  .article-side {
    position: static;
    grid-row: 1;
  }

  .related-grid,
  .all-links-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .article-header-inner,
  .article-shell {
    width: min(100% - 28px, var(--article-max));
  }

  body.article-page h1 {
    font-size: clamp(34px, 12vw, 52px);
  }

  .article-summary {
    padding: 18px;
  }

  .quick-actions.article-quick {
    right: 14px;
    bottom: 14px;
  }
}