@charset "UTF-8";

/* Cocoonの外枠をTOPだけ解除。共有style.cssと他ページは変更しない。 */
body.meten-editorial-home { background: #f7f5f0; }
.meten-editorial-home #header-container,
.meten-editorial-home #breadcrumb,
.meten-editorial-home #sidebar { display: none; }
.meten-editorial-home #content { margin: 0; padding: 0; }
.meten-editorial-home #content-in,
.meten-editorial-home #main {
  width: 100%; max-width: none; margin: 0; padding: 0;
  border: 0; border-radius: 0; background: transparent; box-shadow: none;
}
.meten-editorial-home #content-in { display: block; }
.mt-editorial-home {
  --mt-paper: #f7f5f0; --mt-ink: #183342; --mt-rule: #d8d7d0;
  background: var(--mt-paper); color: #202829;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px; line-height: 1.6;
}
.mt-editorial-home *, .mt-editorial-home *::before, .mt-editorial-home *::after { box-sizing: border-box; }
.mt-editorial-home a { color: inherit; text-decoration: none; }
.mt-editorial-home a:hover { color: #34596b; }
.mt-editorial-home :focus-visible { outline: 3px solid #267e92; outline-offset: 4px; }
.mt-home-container { width: min(1400px, calc(100% - 80px)); margin: 0 auto; }
.mt-home-masthead {
  border-top: 3px solid var(--mt-ink);
  background: linear-gradient(#f7f5f04d, #f7f5f04d), url("images/observatory-masthead-v1.webp") right 36% / cover no-repeat;
  background-color: var(--mt-paper);
}
.mt-home-brand-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 180px; padding-block: 30px; }
.mt-home-brand { position: relative; color: var(--mt-ink); }
.mt-home-site-title { margin: 0 0 8px; padding: 0; border: 0; background: none; font-size: clamp(32px, 2.7vw, 46px); font-weight: 800; line-height: 1.3; letter-spacing: .025em; }
.mt-home-signature { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; margin: 0; font-size: 13px; color: #59666a; }
.mt-home-signature [lang] { font-size: 12px; font-weight: 700; letter-spacing: .12em; color: #325266; }
.mt-home-utilities { display: flex; align-self: flex-start; align-items: center; gap: 18px; padding-top: 18px; font-size: 12px; color: #46545a; text-shadow: 0 0 5px var(--mt-paper), 0 0 8px var(--mt-paper); }
.mt-home-utilities > a, .mt-home-search summary { display: inline-flex; align-items: center; min-height: 44px; }
.mt-home-search { position: relative; }
.mt-home-search summary { cursor: pointer; }
.mt-home-search form { position: absolute; z-index: 20; top: 100%; right: 0; width: min(340px, calc(100vw - 40px)); padding: 18px; background: var(--mt-paper); border: 1px solid var(--mt-rule); box-shadow: 0 8px 24px #18334220; }
.mt-home-search label { display: block; margin-bottom: 8px; }
.mt-home-search-fields { display: flex; gap: 8px; }
.mt-home-search input { min-width: 0; width: 100%; font: inherit; padding: 10px; border: 1px solid #9ca5a6; background: white; color: #202829; }
.mt-home-search button { flex-shrink: 0; font: inherit; padding: 10px 14px; border: 0; background: var(--mt-ink); color: white; cursor: pointer; }
.mt-home-navigation { border-block: 1px solid var(--mt-rule); background: var(--mt-paper); }
.mt-home-menu { display: flex; flex-wrap: wrap; gap: 0 40px; list-style: none; margin: 0; padding: 0; }
.mt-home-menu li { margin: 0; padding: 0; }
.mt-home-menu a { display: flex; align-items: center; min-height: 58px; padding: 8px 0; font-size: 15px; letter-spacing: .04em; }
.mt-home-latest { padding: 28px 0 56px; }
.mt-home-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; border-bottom: 2px solid #263b43; }
.mt-home-section-heading h2 { margin: 0; padding: 0 0 12px; border: 0; background: transparent; font-size: 20px; font-weight: 700; line-height: 1.5; }
.mt-home-section-heading h2 [lang] { margin-right: 16px; font-size: 13px; letter-spacing: .12em; color: #345266; }
.mt-home-section-heading > a { min-height: 44px; font-size: 12px; color: #586165; }
.mt-home-feature-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); grid-template-rows: auto auto 1fr; column-gap: 36px; align-items: start; }
.mt-home-card { min-width: 0; margin: 0; }
.mt-home-card-link { display: grid; grid-template-columns: 38% minmax(0, 1fr); gap: 20px; padding-block: 18px; border-bottom: 1px solid var(--mt-rule); }
.mt-home-card-image { overflow: hidden; aspect-ratio: 3 / 2; background: #e6e6e0; }
.mt-home-card-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
.mt-home-card-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-bottom: 8px; color: #657071; font-size: 12px; line-height: 1.4; }
.mt-home-card-title { margin: 0; padding: 0; border: 0; background: transparent; font-size: 23px; font-weight: 700; line-height: 1.55; overflow-wrap: anywhere; }
.mt-home-card.is-lead { grid-row: 1 / span 3; }
.mt-home-card.is-lead .mt-home-card-link { display: block; padding: 0; border: 0; }
.mt-home-card.is-lead .mt-home-card-image { aspect-ratio: 2.1 / 1; margin-bottom: 16px; }
.mt-home-card.is-lead .mt-home-card-title { font-size: 32px; line-height: 1.5; letter-spacing: -.025em; }
.mt-home-card-excerpt { margin: 10px 0 0; font-size: 14px; line-height: 1.8; color: #626c6c; }
.mt-home-feature-grid > .mt-home-card:nth-child(2) .mt-home-card-link { padding-top: 0; }
.mt-home-card.is-text .mt-home-card-link,
.mt-home-card.is-without-image .mt-home-card-link { grid-template-columns: minmax(0, 1fr); }
.mt-home-card.is-text .mt-home-card-title { font-size: 22px; }
.mt-home-more-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px; margin-top: 26px; padding-top: 8px; border-top: 1px solid var(--mt-rule); }
.mt-home-more-grid .mt-home-card-title { font-size: 21px; }
.mt-home-more-grid .mt-home-card-link { grid-template-columns: 28% minmax(0, 1fr); border-bottom: 0; }
.mt-home-more-grid .mt-home-card.is-without-image .mt-home-card-link { grid-template-columns: minmax(0, 1fr); }
.mt-home-all-articles { display: flex; justify-content: flex-end; margin-top: 24px; }
.mt-home-all-articles a { display: inline-flex; align-items: center; min-height: 44px; padding: 4px 0; border-bottom: 1px solid #263b43; font-size: 14px; }
.mt-home-topics { padding: 0 0 64px; }
.mt-home-topic-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 24px; }
.mt-home-topic-grid a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 58px; border-bottom: 1px solid var(--mt-rule); font-size: 15px; }

@media (max-width: 1100px) {
  .mt-home-container { width: calc(100% - 48px); }
  .mt-home-feature-grid { column-gap: 24px; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
  .mt-home-card-link { gap: 14px; }
  .mt-home-card-title { font-size: 20px; }
  .mt-home-card.is-lead .mt-home-card-title { font-size: 28px; }
}
@media (max-width: 834.98px) {
  .mt-home-container { width: calc(100% - 40px); }
  .mt-home-brand-row { min-height: 144px; padding-block: 24px; gap: 16px; }
  .mt-home-site-title { font-size: 34px; }
  .mt-home-signature { gap: 4px 10px; font-size: 11px; }
  .mt-home-signature [lang] { font-size: 10px; }
  .mt-home-utilities { gap: 14px; padding-top: 0; }
  .mt-home-utilities > .mt-home-about-link { display: none; }
  .mt-home-menu { gap: 0 28px; }
  .mt-home-menu a { min-height: 50px; font-size: 14px; }
  .mt-home-feature-grid { grid-template-columns: minmax(0, 1fr); grid-template-rows: none; }
  .mt-home-card.is-lead { grid-row: auto; padding-bottom: 24px; margin-bottom: 20px; border-bottom: 1px solid var(--mt-rule); }
  .mt-home-card-link { grid-template-columns: 160px minmax(0, 1fr); }
  .mt-home-card.is-lead .mt-home-card-image { aspect-ratio: 1.9 / 1; }
  .mt-home-card.is-lead .mt-home-card-title { font-size: 27px; }
  .mt-home-more-grid { grid-template-columns: minmax(0, 1fr); gap: 0; margin-top: 0; padding-top: 0; border-top: 0; }
  .mt-home-more-grid .mt-home-card-link { grid-template-columns: 160px minmax(0, 1fr); border-bottom: 1px solid var(--mt-rule); }
  .mt-home-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480.98px) {
  .mt-home-container { width: calc(100% - 32px); }
  .mt-home-masthead { background-size: auto 220px; background-position: 58% 35%; }
  .mt-home-brand-row { min-height: 126px; padding-block: 18px; align-items: flex-start; gap: 8px; }
  .mt-home-brand { min-width: 0; padding-top: 12px; }
  .mt-home-site-title { margin-bottom: 7px; font-size: clamp(25px, 6.7vw, 31px); white-space: nowrap; letter-spacing: 0; }
  .mt-home-signature { display: block; font-size: 10px; }
  .mt-home-signature [lang] { display: block; margin-bottom: 2px; font-size: 9px; }
  .mt-home-utilities { flex-shrink: 0; gap: 0; font-size: 11px; }
  .mt-home-utilities > a { display: none; }
  .mt-home-menu { column-gap: 22px; }
  .mt-home-menu a { min-width: 28px; min-height: 44px; font-size: 12px; letter-spacing: 0; }
  .mt-home-latest { padding: 24px 0 40px; }
  .mt-home-section-heading { margin-bottom: 18px; gap: 8px; }
  .mt-home-section-heading h2 { font-size: 17px; padding-bottom: 10px; }
  .mt-home-section-heading h2 [lang] { font-size: 10px; margin-right: 9px; }
  .mt-home-section-heading > a { font-size: 10px; }
  .mt-home-card.is-lead { padding-bottom: 20px; margin-bottom: 0; }
  .mt-home-card.is-lead .mt-home-card-image { margin-bottom: 12px; aspect-ratio: 1.9 / 1; }
  .mt-home-card.is-lead .mt-home-card-title { font-size: 23px; line-height: 1.55; }
  .mt-home-card-excerpt { display: none; }
  .mt-home-card-link, .mt-home-more-grid .mt-home-card-link { grid-template-columns: 104px minmax(0, 1fr); gap: 12px; padding-block: 18px; }
  .mt-home-feature-grid > .mt-home-card:nth-child(2) .mt-home-card-link { padding-top: 18px; }
  .mt-home-card-title, .mt-home-card.is-text .mt-home-card-title, .mt-home-more-grid .mt-home-card-title { font-size: 17px; line-height: 1.55; }
  .mt-home-card-meta { font-size: 10px; gap: 4px 8px; margin-bottom: 6px; }
  .mt-home-topic-grid { gap: 8px 18px; }
  .mt-home-topic-grid a { font-size: 13px; }
}