.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
  border-bottom: 1px solid #eef1ec;
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 28px;
  width: min(1240px, calc(100% - 48px));
  min-height: 78px;
  margin-inline: auto;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: var(--tap-min);
  color: var(--c-main-dark);
  text-decoration: none;
}

.site-header__name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #1c3d38;
}

.gnav {
  margin-left: auto;
}

.gnav__list {
  display: flex;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gnav__row {
  display: flex;
  align-items: center;
}

.gnav__row > a {
  display: flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0 2px 0 14px;
  color: #1c3d38;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.gnav__row > a[aria-current="page"] {
  color: var(--c-main-dark);
  box-shadow: inset 0 -2px 0 var(--c-cta);
}

.gnav__item {
  position: relative;
}

.gnav__sub-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-min);
  height: var(--tap-min);
  padding: 0;
  border: 0;
  border-radius: var(--radius-ctl);
  background: transparent;
  color: var(--c-main-dark);
  cursor: pointer;
}

.gnav__sub-toggle svg {
  transition: transform 0.15s ease;
}

.gnav__item.is-open > .gnav__row .gnav__sub-toggle svg,
.gnav__item:hover > .gnav__row .gnav__sub-toggle svg {
  transform: rotate(180deg);
}

.gnav__sub {
  display: none;
  position: absolute;
  top: calc(100% - 4px);
  left: 0;
  z-index: 20;
  min-width: 240px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  box-shadow: 0 12px 32px rgba(31, 47, 45, 0.08);
}

.gnav__item:hover > .gnav__sub,
.gnav__item:focus-within > .gnav__sub,
.gnav__item.is-open > .gnav__sub {
  display: block;
}

.gnav__pref {
  margin: 0;
  padding: 4px 10px 0;
  color: var(--c-text-sub);
  font-size: 13px;
  font-weight: 700;
}

.gnav__pref a {
  color: var(--c-main-dark);
  text-decoration: none;
}

.gnav__sub ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.gnav__sub a {
  display: flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0 10px;
  border-radius: var(--radius-ctl);
  color: var(--c-text);
  font-weight: 500;
  text-decoration: none;
}

.gnav__sub a:hover,
.gnav__sub a[aria-current="page"] {
  background: var(--c-bg-green);
  color: var(--c-main-dark);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.tag-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--c-bg-green);
  color: var(--c-main-dark);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
}

.site-header__tools {
  display: flex;
  align-items: center;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-ctl);
  background: transparent;
  cursor: pointer;
}

.icon-btn:hover {
  background: var(--c-bg-green);
}

.icon-btn__bars,
.icon-btn__bars::before,
.icon-btn__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--c-main-dark);
  border-radius: 2px;
}

.icon-btn__bars {
  position: relative;
}

.icon-btn__bars::before,
.icon-btn__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.icon-btn__bars::before {
  top: -6px;
}

.icon-btn__bars::after {
  top: 6px;
}

.nav-toggle {
  display: none;
}

.site-footer {
  background: var(--c-footer);
  color: #e7efea;
  padding-block: 48px 32px;
}

.site-footer a {
  color: #fff;
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.site-footer__links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  text-decoration: none;
}

.site-footer__links a:hover {
  text-decoration: underline;
}

.pr-note {
  margin: 0 0 16px;
  color: #d5e0da;
  font-size: 14px;
}

.site-footer__copy {
  margin: 0;
  color: #d5e0da;
  font-size: 13px;
}

.breadcrumb {
  margin: 0 0 20px;
  color: var(--c-text-sub);
  font-size: 13px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: var(--c-line);
}

.area-search {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

.area-search__form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.area-search label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
}

.area-search select,
.btn {
  min-height: 48px;
  border-radius: var(--radius-ctl);
}

.area-search select {
  width: 100%;
  padding: 0 12px;
  border: 1px solid var(--c-line);
  background: #fff;
}

.area-search__status {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--c-warn-text);
  font-size: 14px;
}

.area-search__status:empty {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--c-main);
  color: #fff;
}

.btn--primary:hover {
  background: var(--c-main-dark);
  color: #fff;
}

.btn--secondary {
  background: #fff;
  color: var(--c-main-dark);
  border-color: var(--c-main);
}

.btn--cta {
  background: var(--c-cta);
  color: var(--c-cta-text);
}

.btn--cta:hover {
  color: var(--c-cta-text);
  filter: brightness(0.97);
}

.card-grid,
.area-groups,
.related__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
  gap: 16px;
}

.cat-card,
.post-card,
.related__list a,
.area-group {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

.cat-card {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 14px;
  align-items: center;
  min-height: 88px;
  padding: 16px;
  color: var(--c-text);
  text-decoration: none;
}

.cat-card:hover {
  border-color: var(--c-main);
  color: var(--c-main-dark);
}

.cat-card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--c-bg-green);
  border-radius: 10px;
  color: var(--c-main-dark);
}

.cat-card__label {
  font-weight: 700;
}

.cat-card__arrow {
  color: var(--c-cta);
  font-size: 20px;
}

.area-group {
  padding: 20px;
}

.area-group h2,
.area-group h3 {
  margin-bottom: 12px;
  font-family: var(--font-sans);
  font-size: 18px;
}

.area-list,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.area-chip {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: 0 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: var(--c-bg-sub);
  color: var(--c-text);
  text-decoration: none;
}

a.area-chip {
  background: #fff;
  border-color: var(--c-main);
  color: var(--c-main-dark);
  font-weight: 700;
}

.area-chip--soon {
  color: var(--c-text-sub);
}

.post-card {
  display: grid;
  grid-template-columns: 112px 1fr;
  min-height: 132px;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
}

.post-card:hover {
  border-color: var(--c-main);
}

.post-card__thumb {
  display: block;
  overflow: hidden;
  background: var(--c-bg-green);
}

.post-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 132px;
  object-fit: cover;
  object-position: center;
}

.article-eyecatch {
  margin: 0 0 28px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--c-line-soft);
  background: var(--c-bg-sub);
}

.article-eyecatch img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.post-card__body {
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 16px;
}

.post-card__title {
  font-weight: 700;
  color: var(--c-main-dark);
}

.post-card__excerpt {
  color: var(--c-text-sub);
  font-size: 14px;
}

/* カテゴリ一覧（/guide/ など）：アイキャッチを上段16:9で見せる */
.card-grid--articles .post-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.card-grid--articles .post-card__thumb {
  flex: none;
  width: 100%;
}

.card-grid--articles .post-card__thumb img {
  width: 100%;
  min-height: 0;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.card-grid--articles .post-card__body {
  flex: 1;
  padding: 16px 18px 18px;
}

.post-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.post-row {
  display: grid;
  grid-template-columns: 7.5em 7em 1fr;
  gap: 12px;
  align-items: center;
  min-height: 56px;
  padding: 8px 0;
  border-bottom: 1px solid var(--c-line-soft);
  color: var(--c-text);
  text-decoration: none;
}

.post-row time,
.post-row__cat {
  color: var(--c-text-sub);
  font-size: 13px;
}

.post-row__title {
  font-weight: 700;
}

.post-row:hover .post-row__title {
  color: var(--c-main);
}

.table-scroll {
  overflow-x: auto;
  margin: 0 0 1em;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

.cmp-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: #fff;
}

.cmp-table th,
.cmp-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--c-line-soft);
  text-align: left;
  vertical-align: top;
}

.cmp-table th {
  background: var(--c-bg-green);
  color: var(--c-main-dark);
}

.cmp-table tr:last-child th,
.cmp-table tr:last-child td {
  border-bottom: 0;
}

.layout-article {
  display: grid;
  grid-template-columns: minmax(0, var(--w-article)) 280px;
  gap: 40px;
  align-items: start;
  justify-content: center;
}

.toc {
  padding: 16px 18px;
  background: var(--c-bg-sub);
  border-radius: var(--radius-card);
}

.toc__title {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.toc ol {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 1.2em;
}

.toc a {
  text-decoration: none;
}

.toc--side {
  position: sticky;
  top: 88px;
}

.toc--flow {
  display: none;
  margin-bottom: 28px;
}

.side-block {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

.side-block h2 {
  font-family: var(--font-sans);
  font-size: 16px;
}

.side-block ul {
  margin: 0;
  padding-left: 1.1em;
}

.callout {
  margin: 0 0 1.2em;
  padding: 16px 18px;
  border-radius: var(--radius-card);
}

.callout--warn {
  background: var(--c-warn-bg);
  border: 1px solid var(--c-warn-line);
  color: var(--c-warn-text);
}

.callout--note {
  background: var(--c-note-bg);
  border: 1px solid var(--c-line);
}

.callout :last-child {
  margin-bottom: 0;
}

.checklist {
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
}

.checklist li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
  margin-bottom: 12px;
}

.checklist svg {
  margin-top: 4px;
}

.steps {
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-main);
  color: #fff;
  font-weight: 700;
}

.faq details {
  border-bottom: 1px solid var(--c-line);
}

.faq summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 8px 0;
  font-weight: 700;
  cursor: pointer;
}

.faq details p {
  margin-top: 0;
}

.related__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.related__list a {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 14px 16px;
  font-weight: 700;
  text-decoration: none;
}

.sources {
  padding-left: 1.2em;
}

.sources li {
  margin-bottom: 8px;
}

.meta-dates {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0 0 24px;
  color: var(--c-text-sub);
  font-size: 13px;
}

.ad-block {
  margin: 28px 0;
  padding: 18px;
  background: var(--c-warn-bg);
  border: 1px solid var(--c-warn-line);
  border-radius: var(--radius-card);
}

.ad-block__label {
  margin-bottom: 8px;
}

.badge-pr {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 4px;
  background: var(--c-cta);
  color: var(--c-cta-text);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ad-block__banner {
  margin: 12px 0 0;
}

.ad-block__banner a {
  display: inline-block;
  max-width: 100%;
}

.ad-block__banner a img {
  display: block;
  width: min(336px, 100%);
  height: auto;
}

.ad-block__pixel {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.page-hero {
  padding-block: 36px 8px;
}

.page-hero p {
  max-width: 40em;
}

.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
}

.contact-form label:not(.contact-form__agree) {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
}

.contact-form label span.contact-form__hint {
  font-weight: 400;
  color: var(--c-text-sub);
  font-size: 13px;
}

.contact-form .req {
  color: var(--c-warn-text);
  font-size: 12px;
  margin-left: 4px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-ctl);
  font: inherit;
  font-weight: 400;
  background: #fff;
}

.contact-form textarea {
  min-height: 160px;
  resize: vertical;
}

.contact-form__agree {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  cursor: pointer;
}

.contact-form__agree input {
  flex: 0 0 auto;
  width: 1.125rem;
  height: 1.125rem;
  min-height: 0;
  margin: 0.2em 0 0;
  padding: 0;
  accent-color: var(--c-main);
  cursor: pointer;
}

.contact-form__agree span {
  flex: 1;
  min-width: 0;
}

.contact-form__hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form__alert {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-ctl);
  background: #fff4f0;
  border: 1px solid #f0c4b8;
  color: var(--c-warn-text);
  font-size: 14px;
}

.contact-form__alert[hidden] {
  display: none;
}

.contact-form__note {
  margin: 0;
  font-size: 14px;
  color: var(--c-text-sub);
}

@media (max-width: 767px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    position: sticky;
  }

  .site-header__bar {
    position: relative;
    flex-wrap: wrap;
    width: min(1240px, calc(100% - var(--gutter) * 2));
    min-height: 64px;
  }

  .site-header__tools {
    margin-left: auto;
  }

  .gnav {
    display: none;
    position: absolute;
    top: 100%;
    left: calc(var(--gutter) * -1);
    right: calc(var(--gutter) * -1);
    margin: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
  }

  .gnav.is-open {
    display: block;
  }

  .gnav__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 0 12px;
  }

  .gnav__row > a {
    flex: 1;
    padding-inline: var(--gutter);
  }

  .gnav__item:hover > .gnav__sub,
  .gnav__item:focus-within > .gnav__sub {
    display: none;
  }

  .gnav__item.is-open > .gnav__sub {
    display: block;
  }

  .gnav__sub {
    position: static;
    min-width: 0;
    margin: 0 var(--gutter) 8px;
    padding: 4px;
    box-shadow: none;
  }

  .gnav__sub-toggle svg {
    transform: none;
  }

  .area-search__form,
  .card-grid:not(.card-grid--articles) .post-card,
  .post-row,
  .layout-article {
    grid-template-columns: 1fr;
  }

  .layout-article {
    display: flex;
    flex-direction: column;
  }

  .layout-article > aside {
    display: contents;
  }

  .toc--flow {
    display: block;
  }

  .toc--side {
    display: none;
  }

  .layout-article > article {
    order: 1;
    min-width: 0;
    max-width: 100%;
  }

  .table-scroll {
    max-width: calc(100vw - var(--gutter) * 2);
  }

  .side-block {
    order: 2;
  }

  .post-row {
    gap: 2px;
    padding: 12px 0;
  }
}