/* =========================================================
   中小企業ホームページのSEO・AIO施策図鑑（/zukan/）
   2026-10-04 作成。色は :root の変数だけを使う。ボタンは .buttonArrow、見出しは .heading-underline を流用
   ========================================================= */
.zk {
  width: 100%;
  color: var(--text-color-01);
  font-family: var(--ff-ja);
}
/* SWELLのサイドバーも出さない（PHP側でも止めている） */
.single-seo_measure #sidebar,
.post-type-archive-seo_measure #sidebar,
.tax-measure_cat #sidebar,
.tax-measure_scene #sidebar {
  display: none;
}
/* SWELLのタイトル帯は使わない（H1はテンプレート側で1つだけ出す） */
.single-seo_measure #top_title_area,
.post-type-archive-seo_measure #top_title_area,
.tax-measure_cat #top_title_area,
.tax-measure_scene #top_title_area {
  display: none;
}
.zk-inner {
  max-width: 1040px;
  margin-inline: auto;
  padding-inline: 20px;
}
.zk a {
  color: inherit;
  text-decoration: none;
}
.zk-vh {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- 見出しの帯 ---------- */
.zk-head {
  padding-block: 48px 32px;
}
.zk-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-color);
}
.zk-head__meta a:hover {
  text-decoration: underline;
}
.zk-head__meta a + a::before {
  content: "｜";
  margin-right: 12px;
  color: #bbb;
}
.zk-head__title {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.02em;
}
.zk-head__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 詳細：概要＋例の図 ---------- */
.zk-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
  padding-block: 8px 32px;
}
.zk-overview.-noimg {
  grid-template-columns: 1fr;
}
.zk-overview.-noimg .zk-overview__body {
  max-width: 760px;
}
.zk-overview__fig {
  margin: 0;
}
.zk-overview__fig img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: var(--bg-color);
}
.zk-overview__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.9;
}
.zk-h2 {
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--accent-color);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

/* ---------- 詳細：効果・目的・注意点 ---------- */
.zk-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-block: 8px 56px;
}
.zk-col {
  padding: 24px;
  border-radius: 8px;
  background: var(--bg-color);
}
.zk-col .zk-h2 {
  font-size: 17px;
}
.zk-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.zk-col li {
  position: relative;
  margin-top: 8px;
  padding-left: 1.1em;
  font-size: 14px;
  line-height: 1.7;
}
.zk-col li::before {
  content: "";
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-color);
}

/* ---------- チップ（絞り込み・関連施策） ---------- */
.zk-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.zk-chips a {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid #ddd;
  border-radius: 100px;
  background: #fff;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  transition: border-color 0.2s, color 0.2s;
}
.zk-chips a:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}
.zk-chips a.-current {
  border-color: var(--accent-color);
  background: var(--accent-color);
  color: #fff;
}
.zk-chips a.-label {
  font-weight: 700;
}
.zk-chips a.-back {
  border-color: var(--accent-color);
  color: var(--accent-color);
  font-weight: 700;
}

/* ---------- 一覧 ---------- */
.zk-filter {
  display: grid;
  gap: 10px;
  padding-bottom: 32px;
}
.zk-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.zk-card a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 20px;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.zk-card a:hover {
  border-color: var(--accent-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}
.zk-card__img img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}
.zk-card__cat {
  align-self: flex-start;
  padding: 2px 10px;
  border-radius: 100px;
  background: var(--bg-color);
  color: var(--accent-color);
  font-size: 12px;
  font-weight: 700;
}
.zk-card__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}
.zk-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}
.zk-pager {
  padding-block: 32px 56px;
  text-align: center;
}
.zk-pager .nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.zk-pager .page-numbers {
  display: inline-grid;
  place-content: center;
  min-width: 40px;
  height: 40px;
  margin: 0;
  padding: 0 12px;
  border: 1px solid #ddd;
  border-radius: 100px;
  background: #fff;
  color: var(--text-color-01);
  font-size: 14px;
  line-height: 1;
}
.zk-pager .page-numbers.current {
  border-color: var(--accent-color);
  background: var(--accent-color);
  color: #fff;
}
.zk-pager .screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.zk-empty {
  padding-block: 24px 56px;
}

/* ---------- 共通CTA ---------- */
.zk-cta {
  padding-block: 48px;
  background: var(--bg-color);
  text-align: center;
}
.zk-reasons {
  max-width: 760px;
  margin: 0 auto 40px;
  padding: 28px 32px;
  border-radius: 8px;
  background: #fff;
  text-align: left;
}
.zk-reasons__title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}
.zk-reasons__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: zk-reason;
}
.zk-reasons__list li {
  position: relative;
  padding: 10px 0 10px 40px;
  border-top: 1px solid #eee;
  font-size: 15px;
  line-height: 1.7;
  counter-increment: zk-reason;
}
.zk-reasons__list li:first-child {
  border-top: 0;
}
.zk-reasons__list li::before {
  content: counter(zk-reason, decimal-leading-zero);
  position: absolute;
  top: 10px;
  left: 0;
  color: var(--accent-color);
  font-family: var(--ff-en);
  font-weight: 700;
}
.zk-reasons__more {
  display: block;
  margin-top: 14px;
  color: var(--accent-color) !important;
  font-size: 14px;
  font-weight: 700;
  text-align: right;
  text-decoration: underline !important;
}
.zk-cta__head {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
}
.zk-cta__lead {
  margin: 10px 0 24px;
  font-size: 15px;
  line-height: 1.8;
}
.zk-cta__btn,
.zk-links__btn {
  max-width: 360px;
  margin-inline: auto;
}
.zk-cta__micro {
  margin: 10px 0 0;
  font-size: 13px;
}
.zk-cta__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
}
.zk-cta__links a {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ---------- 詳細：関連施策 ---------- */
.zk-related {
  padding-block: 40px 64px;
}
.zk-related__title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
}

/* ---------- 既存ページに置く導線 ---------- */
.zk-links {
  padding-block: 64px;
}
.zk-links__lead {
  margin: 24px auto 32px;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
}
.zk-links .zk-cards {
  margin-bottom: 32px;
}

/* ---------- タブレット ---------- */
@media (max-width: 1023px) {
  .zk-overview {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .zk-cols,
  .zk-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- スマホ ---------- */
@media (max-width: 600px) {
  .zk-inner {
    padding-inline: 16px;
  }
  .zk-head {
    padding-block: 32px 24px;
  }
  .zk-head__title {
    font-size: 24px;
  }
  .zk-head__lead {
    font-size: 15px;
  }
  .zk-cols,
  .zk-cards {
    grid-template-columns: 1fr;
  }
  .zk-cta__head {
    font-size: 19px;
  }
  .zk-reasons {
    padding: 20px;
  }
  .zk-reasons__list li {
    padding-left: 32px;
    font-size: 14px;
  }
  .zk-links {
    padding-block: 48px;
  }
}