/* ============================================
   CSS変数定義
   ============================================ */
:root {
  --color-white: #ffffff;
  --color-main: #167db9;
  --color-base: #f7f7f7;
  --color-font: #5e5e5e;
  --color-bg: #d9d9d9;
  --color-muted: #d4d4d4;
  --color-base-b: #f1faff;
  --color-blue: #a6d7f3;
  --color-red: #ec2424;
  --color-red-gradient: linear-gradient(to bottom, #ec2424, #960909);
  --color-gold-gradient: linear-gradient(to bottom, #dea83c, #af7e1d);
  --color-gold: #dea83c;
  --color-dark: #333333;
  --color-yellow-bg: #fff9e6;
}

/* ============================================
   リセット・ベーススタイル
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  min-width: 375px;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "Playfair Display", serif;
  color: var(--color-font);
  background-color: var(--color-base);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  width: 100%;
}

main {
  flex: 1;
}

/* PCのみ改行（copy の /n） */
br.syvix-break-pc {
  display: block;
}

/* SPのみ改行（copy の /br および br.sp-only） */
br.syvix-break-sp,
br.sp-only {
  display: none;
}

/* ============================================
   ヘッダー
   ============================================ */
.site-header {
  width: 100%;
  background-color: var(--color-white);
  padding: 15px 50px;
  position: relative;
  z-index: 1000;
  transition: transform 0.3s ease;
}

.site-header-placeholder {
  display: none;
  width: 100%;
}

/* 固定表示時のスタイル */
.site-header.is-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

/* ============================================
   ナビゲーション
   ============================================ */
/* ナビゲーションコンテナ */
.site-nav {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

/* ロゴ */
.site-logo {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.site-logo__link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo__image {
  display: block;
  width: 158px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: left center;
}

/* ナビゲーションコンテンツ */
.site-nav__content {
  display: flex;
  align-items: center;
  gap: 50px;
}

/* ナビゲーションリンク */
.nav-links {
  display: flex;
  align-items: stretch;
  gap: 30px;
  font-weight: 700;
  font-size: 18px;
}

.nav-link {
  color: var(--color-font);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-main);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

.nav-link__sub {
  font-family: "Playfair Display", serif;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-main);
}

.nav-divider {
  width: 1px;
  border: none;
  background-color: var(--color-muted);
  margin: 0;
  align-self: stretch;
}

/* CTAボタン */
.cta-button {
  padding: 15px 35px;
  width: 220px;
  height: 60px;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  background-color: var(--color-main);
  color: var(--color-base);
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.cta-button:hover,
.cta-button:focus-visible {
  background-color: var(--color-white);
  color: var(--color-main);
  border: solid 1px var(--color-main);
}

/* アコーディオンメニュー（モバイル用） */
.nav-accordion {
  display: none;
  width: 100%;
}

.nav-accordion__content {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.nav-accordion__item {
  border-bottom: 1px solid var(--color-muted);
  padding-bottom: 15px;
}

.nav-accordion__toggle {
  width: 100%;
  border: none;
  background: none;
  color: var(--color-font);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.nav-accordion__link {
  width: 100%;
  text-decoration: none;
  color: var(--color-font);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  cursor: pointer;
  position: relative;
}

.nav-accordion__link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

.nav-accordion__link:hover,
.nav-accordion__link:focus-visible {
  color: var(--color-main);
}

.nav-accordion__link:hover::after,
.nav-accordion__link:focus-visible::after {
  width: 100%;
}

.nav-accordion__icon {
  width: 16px;
  height: 16px;
  position: relative;
}

.nav-accordion__icon::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 0;
  width: 9px;
  height: 18px;
  clip-path: polygon(100% 50%, 20% 100%, 0% 100%, 80% 50%, 0% 0%, 20% 0%);
  background-color: var(--color-main);
  transform: translateY(-50%) rotate(90deg);
}

.nav-accordion__toggle[aria-expanded="true"] .nav-accordion__icon::before {
  transform: translateY(-50%) rotate(-90deg);
}

.nav-accordion__icon-text {
  color: var(--color-font);
  font-weight: bold;
  font-size: 18px;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 10px;
  font-family: "Noto Serif JP";
}

.nav-accordion__icon-text-sub {
  color: var(--color-main);
  font-family: "Playfair Display";
  font-size: 12px;
}

.nav-accordion__panel {
  padding: 5px 0 0 20px;
  display: grid;
  gap: 40px;
}

.nav-accordion__panel[hidden] {
  display: none;
  padding: 0;
}

.nav-accordion__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  line-height: 2.1;
}

.nav-accordion__list a,
.nav-accordion__list span {
  color: var(--color-font);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  display: inline-block;
}

.nav-accordion__list a::after,
.nav-accordion__list span::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

.nav-accordion__list a:hover,
.nav-accordion__list a:focus-visible,
.nav-accordion__list span:hover,
.nav-accordion__list span:focus-visible {
  color: var(--color-main);
}

.nav-accordion__list a:hover::after,
.nav-accordion__list a:focus-visible::after,
.nav-accordion__list span:hover::after,
.nav-accordion__list span:focus-visible::after {
  width: 100%;
}

.nav-accordion__note {
  margin: 0;
  font-size: 14px;
  text-align: left;
}

.nav-accordion__note a {
  color: var(--color-font);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  display: inline-block;
}

.nav-accordion__note a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

.nav-accordion__note a:hover,
.nav-accordion__note a:focus-visible {
  color: var(--color-main);
}

.nav-accordion__note a:hover::after,
.nav-accordion__note a:focus-visible::after {
  width: 100%;
}

/* モバイルコントロール（ハンバーガーメニュー） */
.site-nav__mobile-controls {
  display: none;
  align-items: center;
  gap: 20px;
}

.site-nav__mobile-email,
.site-nav__mobile-button {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--color-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-main);
  background-color: var(--color-white);
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.site-nav__mobile-email {
  color: var(--color-white);
  background-color: var(--color-main);
  border: none;
  text-decoration: none;
}

.site-nav__mobile-email:hover,
.site-nav__mobile-email:focus-visible {
  background-color: var(--color-white);
  color: var(--color-main);
  border: 1px solid var(--color-main);
}

.site-nav__mobile-email svg {
  display: block;
}

.site-nav__mobile-button {
  flex-direction: column;
  gap: 6px;
  position: relative;
  border-style: none;
}

.site-nav__mobile-line {
  width: 28px;
  height: 2px;
  background-color: currentColor;
  border-radius: 999px;
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
  position: relative;
}

/* メニューが開いている時のスタイル */

/* ハンバーガーアイコンを×印に変形するアニメーション */
.site-nav__mobile-button[aria-expanded="true"]
  .site-nav__mobile-line:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.site-nav__mobile-button[aria-expanded="true"]
  .site-nav__mobile-line:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* ============================================
   共通スタイル
   ============================================ */
.shell {
  margin: 0 auto;
  max-width: 1920px;
  width: 100%;
}

.section {
  padding: 80px 0;
}

.section-label {
  font-size: 30px;
  font-family: "Playfair Display";
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-main);
}

.label-sub {
  color: var(--color-font);
  font-size: 14px;
  font-weight: bold;
  font-family: "Noto Serif JP", "Playfair Display", serif;
}

.label-separator {
  display: block;
  clip-path: polygon(70% 0%, 90% 0%, 30% 100%, 10% 100%);
  background-color: var(--color-main);
  width: 16px;
  height: 23px;
}

/* 見出し: 英字は装飾、hタグ内は日本語のみ（レイアウトは display: contents で維持） */
.section-heading__title {
  margin: 0;
  font: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  color: inherit;
}

.concept-label .section-heading__title,
.service-label .section-heading__title,
.column-label .section-heading__title,
.column-archive__label-group .section-heading__title,
.link-building-service-sp__title .section-heading__title {
  display: contents;
}

.link-building-achievements__heading .section-heading__title,
.link-building-customer__title .section-heading__title,
.link-building-comparison__title .section-heading__title,
.link-building-flow__title .section-heading__title,
.link-building-faq__title .section-heading__title {
  margin: 0;
  font: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  color: inherit;
  text-align: center;
}

.section-heading {
  max-width: 640px;
}

/* ============================================
   ヒーローセクション
   ============================================ */
.section--hero {
  padding: 110px 0 160px;
  font-size: 88px;
  color: var(--color-main);
  background: var(--color-base) url(../images/top-fv-bg.svg) center/cover
    no-repeat;
}

.hero {
  width: 100%;
  max-width: 1440px;
  padding: 0 220px;
}

.hero__title {
  font-size: 88px;
  color: var(--color-main);
  line-height: 1.2;
  margin: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.hero__title-sub {
  font-size: 58px;
}

.hero__title-highlight {
  font-size: 74px;
}

.hero__lead {
  font-size: 50px;
  font-weight: bold;
  line-height: 1.8;
  margin: 0 0 80px;
  color: var(--color-font);
}

.hero__cta {
  display: flex;
  justify-content: center;
  width: 100%;
}

.btn--hero {
  width: 320px;
  height: 70px;
  padding: 20px 50px;
  background: var(--color-gold-gradient);
  color: var(--color-white);
  border: 3px var(--color-white) solid;
  box-shadow: 0 4px 6px 0 rgba(0, 0, 0, 0.25);
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  position: relative;
  font-size: 20px;
  flex-wrap: nowrap;
  gap: 10px;
  font-weight: bold;
  text-decoration: none;
  transition: 0.2s ease;
}

.btn--hero::after {
  content: "";
  position: absolute;
  right: 20px;
  width: 6px;
  height: 12px;
  background-color: var(--color-white);
  clip-path: polygon(100% 50%, 35% 100%, 0% 100%, 65% 50%, 0% 0%, 35% 0%);
}

.btn--hero:hover {
  background: var(--color-white);
  color: var(--color-gold);
  border: 3px var(--color-gold) solid;
}

.btn--hero:hover::after {
  background-color: var(--color-gold);
}

/* ============================================
   Link building page: hero (FV)
   ============================================ */
.section--link-building-hero {
  padding: 80px 20px 120px;
  background-image: url(../images/top-fv-bg.svg);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.link-building-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  gap: 32px;
}

.link-building-hero__headline {
  display: inline-grid;
  width: max-content;
  max-width: 100%;
  justify-items: stretch;
  gap: 12px;
}

.link-building-hero__title {
  margin: 0;
  font-size: 56px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-main);
  word-break: keep-all;
}

.link-building-hero__title-em {
  font-size: 80px;
  line-height: 1.2;
}

.link-building-hero__tagline {
  margin: 0;
  padding: 12px 0;
  width: 100%;
  box-sizing: border-box;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  background: linear-gradient(
    90deg,
    transparent 0%,
    #999999 25%,
    #999999 75%,
    transparent 100%
  );
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.link-building-hero__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  width: 100%;
  max-width: 720px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.link-building-hero__stat {
  flex: 1 1 180px;
  max-width: 220px;
  min-width: 160px;
  padding: 20px 16px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-main);
  border-top-left-radius: 40px;
  border-bottom-right-radius: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.link-building-hero__stat-label {
  display: block;
  width: 100%;
  padding-bottom: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-main);
  border-bottom: 2px dotted var(--color-main);
}

.link-building-hero__stat-value {
  display: block;
  font-size: 50px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-main);
}

.link-building-hero__stat-unit {
  font-size: 22px;
}

.link-building-hero__cta {
  margin-top: 16px;
}

.link-building-hero__cta .link-building-hero__btn {
  width: 360px;
  max-width: 100%;
  height: 72px;
  margin-top: 28px;
  padding-right: 48px;
  justify-content: center;
  border: none;
}

.link-building-hero__cta .link-building-hero__btn:hover {
  border: none;
}

.editor-styles-wrapper {
  font-family: "Noto Serif JP", "Playfair Display", serif;
}

.editor-styles-wrapper .link-building-hero__inner {
  align-items: center;
  text-align: center;
  width: 100%;
}

.editor-styles-wrapper .link-building-hero__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  width: 100%;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.editor-styles-wrapper .link-building-hero__stat {
  width: 100%;
}

.editor-styles-wrapper .link-building-hero__title-em {
  font-size: 80px;
}

/* ============================================
   Link building page: Service block (SP)
   ============================================ */
.section--link-building-service-sp {
  display: none;
  padding: 32px 15px 40px;
  background-color: var(--color-white);
}

.syvix-llmo-page .section--link-building-service-sp {
  display: none !important;
}

.link-building-service-sp {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.link-building-service-sp__header {
  margin: 0;
  text-align: center;
}

.link-building-service-sp__title.section-label {
  flex-direction: column;
  align-items: center;
  margin: 0;
}

.link-building-service-sp__card {
  width: 100%;
  max-width: 375px;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 20px 24px;
  border: 2px solid var(--color-blue);
  background-color: var(--color-white);
}

.link-building-service-sp__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.link-building-service-sp__icon-image {
  display: block;
  width: 44px;
  height: auto;
}

.link-building-service-sp__name {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
  text-align: center;
}

/* ============================================
   Link building page: intro
   ============================================ */
.section--link-building-intro {
  padding: 32px 20px 80px;
  background-color: var(--color-base-b);
  overflow: visible;
}

.link-building-intro {
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.link-building-intro__breadcrumb .breadcrumb__list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  width: max-content;
  max-width: none;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-font);
  font-family: "Noto Serif JP", serif;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: ">";
  margin-right: 8px;
  color: var(--color-font);
}

.breadcrumb__link {
  color: var(--color-font);
  text-decoration: none;
  display: inline-block;
  padding-bottom: 2px;
  background-image: linear-gradient(var(--color-main), var(--color-main));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition:
    color 0.2s ease,
    background-size 0.3s ease;
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
  color: var(--color-main);
  background-size: 100% 2px;
}

/* サイトマップページ: 本文テキストリンク */
body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link),
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link),
body.page-slug-sitemap .wp-block-list a {
  color: var(--color-font);
  text-decoration: none;
  position: relative;
  display: inline-block;
  transition: color 0.2s ease;
}

body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link)::after,
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link)::after,
body.page-slug-sitemap .wp-block-list a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):hover,
body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):focus-visible,
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):hover,
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):focus-visible,
body.page-slug-sitemap .wp-block-list a:hover,
body.page-slug-sitemap .wp-block-list a:focus-visible {
  color: var(--color-main);
}

body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):hover::after,
body.page-slug-sitemap .entry-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):focus-visible::after,
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):hover::after,
body.page-slug-sitemap .wp-block-post-content a:not(.btn--hero):not(.card-link):not(.cta-button):not(.wp-block-button__link):focus-visible::after,
body.page-slug-sitemap .wp-block-list a:hover::after,
body.page-slug-sitemap .wp-block-list a:focus-visible::after {
  width: 100%;
}

.link-building-intro__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  margin-bottom: 64px;
}

.link-building-intro__nav-btn.btn--hero {
  width: 100%;
  max-width: 280px;
  height: auto;
  min-height: 72px;
  margin: 0;
  padding: 16px 40px;
  justify-content: center;
  background: var(--color-main);
  color: var(--color-white);
  border: 3px solid var(--color-white);
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  box-shadow: 0 4px 6px 0 rgba(0, 0, 0, 0.25);
  font-size: 18px;
}

.link-building-intro__nav-btn.btn--hero:hover {
  background: var(--color-white);
  color: var(--color-main);
  border: 3px solid var(--color-main);
}

.link-building-intro__nav-btn.btn--hero::after {
  background-color: var(--color-white);
}

.link-building-intro__nav-btn.btn--hero:hover::after {
  background-color: var(--color-main);
}

.link-building-intro__nav-btn.btn--hero:hover
  .link-building-intro__nav-icon
  img {
  filter: brightness(0) saturate(100%) invert(30%) sepia(75%) saturate(2476%)
    hue-rotate(181deg) brightness(92%) contrast(89%);
}

.link-building-intro__nav-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: 40px;
}

.link-building-intro__nav-icon img {
  display: block;
  width: auto;
  height: 40px;
  max-width: none;
}

.link-building-intro__nav-label {
  flex: 0 1 auto;
  line-height: 1.4;
  text-align: center;
}

.link-building-intro__panel {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  gap: 40px;
  align-items: end;
  padding: 32px 40px 48px;
  background-color: var(--color-white);
  overflow: visible;
  margin-top: 6rem;
}

.link-building-intro__content {
  min-width: 0;
}

.link-building-intro__lead {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.8;
  color: var(--color-font);
}

.link-building-intro__text {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.8;
  color: var(--color-font);
}

.link-building-intro__media {
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
  min-width: 0;
  overflow: visible;
}

.link-building-intro__media-inner {
  position: relative;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}

.link-building-intro__image {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 100%;
  max-width: 280px;
  height: auto;
  transform: translateX(-50%) translateY(12%) scale(1.1);
  transform-origin: center bottom;
}

/* ============================================
   SEO landing page: intro (KW cards + panel)
   ============================================ */
.section--seo-intro .link-building-intro {
  gap: 32px;
}

.seo-intro-kw-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.seo-intro-kw-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.seo-intro-kw-card__head {
  margin: 0;
  padding: 14px 12px;
  background-color: #999999;
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  letter-spacing: 0.02em;
}

.seo-intro-kw-card__metrics {
  padding: 16px 24px;
  margin: 0;
  flex: 1;
}

.seo-intro-kw-card__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  margin: 0;
  border-bottom: 1px solid var(--color-muted);
}

.seo-intro-kw-card__row:last-child {
  border-bottom: none;
}

.seo-intro-kw-card__label {
  text-align: center;
  padding: 4px;
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-font);
  background-color: #ebebeb;
}

.seo-intro-kw-card__value {
  padding: 4px 8px;
  text-align: left;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-font);
}

.seo-intro-kw-card__unit {
  font-size: 14px;
  font-weight: 700;
}

.section--seo-intro .link-building-intro__nav {
  margin-top: 8px;
  margin-bottom: 84px;
}

[data-landing="llmo"].bg-white {
  background-color: var(--color-white);
}

[data-landing="llmo"] .link-building-hero__content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-width: 287px;
  padding: 10px 24px;
  box-sizing: border-box;
  border: 2px solid #167db9;
  background-color: var(--color-white);
}

[data-landing="llmo"] .link-building-hero__content img {
  flex-shrink: 0;
  display: block;
  width: 44px;
  height: auto;
}

[data-landing="llmo"] .link-building-hero__content .link-building-hero__title {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-font);
}

.section--llmo-intro .link-building-intro {
  gap: 32px;
}

.section--llmo-intro .link-building-intro__nav {
  margin-top: 8px;
  margin-bottom: 100px;
}

.section--llmo-intro .link-building-intro__panel {
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
}

/* ============================================
   Link building page: achievements
   ============================================ */
.section--link-building-achievements {
  padding: 0;
  overflow: hidden;
}

/* 支援実績カード（事例スライダー）一時非表示 */
.link-building-achievements__cases {
  display: none !important;
}

.link-building-achievements__hero {
  padding: 56px 20px 64px;
  color: var(--color-white);
  text-align: center;
  background-color: var(--color-main);
  background-image: url(../images/link-building-bg.webp);
  background-position: center top;
  background-size: cover;
  background-repeat: no-repeat;
}

.link-building-achievements__hero-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.link-building-achievements__heading-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  max-width: none;
  margin: 0 auto;
}

.link-building-achievements__heading-wrap .section-label,
.link-building-achievements__heading-wrap .label-sub {
  font-family: "Noto Serif JP", serif;
  color: var(--color-white);
}

.link-building-achievements__heading.service-label {
  gap: 12px;
  margin: 0;
}

.link-building-achievements__slash.label-separator {
  background-color: var(--color-white);
}

.link-building-achievements__lead.label-sub {
  margin: 0;
  font-size: 16px;
  font-weight: normal;
  line-height: 1.8;
}

.link-building-achievements__cases {
  padding: 60px;
  background-color: var(--color-main);
}

.link-building-achievements__cases-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.link-building-achievements__cases-slider {
  width: 100%;
}

.link-building-achievements-cases-swiper__pagination {
  display: none;
}

.link-building-achievements-cases-swiper {
  width: 100%;
  overflow: hidden;
}

.link-building-achievements-cases-swiper .swiper-wrapper {
  display: flex;
  align-items: stretch;
}

.link-building-achievements-cases-swiper .swiper-slide {
  width: min(320px, calc(100% - 40px));
  height: auto;
}

.link-building-achievements__cases .works-card {
  height: 100%;
}

.link-building-achievements__cases .works-card__title {
  font-family: "Noto Serif JP", serif;
}

.link-building-achievements__cases .works-card__info-label {
  font-size: 14px;
}

.link-building-achievements__logos {
  padding: 28px 0 32px;
  background-color: var(--color-base);
  overflow: hidden;
}

.link-building-achievements-logos-swiper {
  width: 100%;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
}

.link-building-achievements-logos-swiper .swiper-wrapper {
  transition-timing-function: linear;
}

.link-building-achievements-logos-swiper .swiper-slide {
  width: 200px;
  height: auto;
  transform: translateZ(0);
}

.link-building-achievements__logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 88px;
  padding: 16px 20px;
  background-color: var(--color-white);
  box-sizing: border-box;
}

.link-building-achievements__logo-placeholder {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-font);
  text-align: center;
}

.link-building-achievements__logo-image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 56px;
  height: auto;
  object-fit: contain;
  object-position: center;
}

/* ============================================
   Link building page: customer concerns
   ============================================ */
.section--link-building-customer {
  padding: 64px 20px 72px;
  overflow: hidden;
  background-color: var(--color-white);
  background-image: url(../images/customer-bg.webp);
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 33.333% auto;
}

.link-building-customer {
  position: relative;
}

.link-building-customer__inner {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.link-building-customer__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: none;
  margin: 0;
  text-align: center;
}

.link-building-customer__title.section-label {
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: bold;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-customer__slash.label-separator {
  margin: 0 auto;
}

.link-building-customer__card {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 32px 40px;
  align-items: center;
  width: 100%;
  padding: 32px 40px;
  border-top-left-radius: 40px;
  border-bottom-right-radius: 40px;
  background-color: var(--color-base-b);
}

.link-building-customer__figure {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.link-building-customer__illustration {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
}

.link-building-customer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.link-building-customer__list-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-family: "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.7;
}

.link-building-customer__check {
  flex-shrink: 0;
  width: 24px;
  height: 27px;
  margin-top: 0.35em;
  background: url(../images/check-icon.svg) center / contain no-repeat;
}

.link-building-customer__text {
  display: block;
  min-width: 0;
}

.link-building-customer__line-row {
  display: block;
}

.link-building-customer__line-row .link-building-customer__line,
.link-building-customer__line-row .link-building-customer__emphasis {
  display: inline;
}

.link-building-customer__line {
  color: var(--color-font);
}

.link-building-customer__emphasis {
  display: inline;
  width: fit-content;
  font-weight: 700;
  color: var(--color-main);
  padding: 0 0.25em;
  background-image: linear-gradient(
    transparent 58%,
    rgba(255, 255, 255, 0.4) 64%,
    rgba(255, 255, 255, 0.95) 72%,
    #ffffff 76%,
    #ffffff 84%,
    rgba(255, 255, 255, 0.95) 90%,
    rgba(255, 255, 255, 0.4) 94%,
    transparent 98%
  );
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.link-building-customer__solution {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
  text-align: center;
  font-family: "Noto Serif JP", serif;
}

.link-building-customer__solution-lead,
.link-building-customer__solution-text {
  margin: 0;
  font-weight: 700;
  line-height: 1.5;
}

.link-building-customer__lead-lg {
  font-size: 38px;
}

.link-building-customer__lead-sm {
  font-size: 30px;
  color: var(--color-font);
}

.link-building-customer__marker--guarantee,
.link-building-customer__lead-lg:not(
    :has(.link-building-customer__marker--guarantee)
  )
  .link-building-customer__marker--service {
  color: var(--color-main);
  background: linear-gradient(
    transparent 58%,
    #fff600 58%,
    #fff600 88%,
    transparent 88%
  );
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.link-building-customer__marker--service {
  color: var(--color-main);
}

.link-building-customer__dot {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-main);
}

.link-building-customer__headline-row {
  display: inline;
}

.link-building-customer__solution-plain--sp {
  display: none;
}

.link-building-customer__solution-rich {
  display: inline;
}

.link-building-customer__bonten {
  font-style: normal;
  font-size: 30px;
  font-weight: 700;
  color: var(--color-main);
  display: inline;
}

.link-building-customer__bonten-char {
  position: relative;
  display: inline-block;
}

.link-building-customer__bonten-char::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  transform: translateX(-50%);
}

.link-building-customer__chevron {
  display: block;
  width: 120px;
  height: auto;
  margin-top: 16px;
}

@media (min-width: 1081px) {
  .section--link-building-achievements.section--llmo-achievements {
    background-color: var(--color-main);
    padding-bottom: 6rem;
  }

  .link-building-achievements__cases-slider {
    display: block;
  }

  .link-building-achievements-cases-swiper .swiper-slide {
    width: auto;
  }

  .link-building-customer__lead-lg {
    display: inline-flex;
    font-size: 38px;
  }

  .link-building-customer__headline-row {
    display: inline;
  }

  .link-building-customer__headline-row .link-building-customer__lead-sm {
    font-size: 30px;
    color: var(--color-font);
  }

  .link-building-customer__solution-plain--sp {
    display: none;
  }

  .link-building-customer__solution-rich {
    display: inline;
  }

  .link-building-faq__toggle {
    display: none;
  }

  .link-building-faq__question {
    cursor: default;
    pointer-events: none;
  }

  .link-building-faq__answer[hidden] {
    display: flex;
  }
}

/* ============================================
   Link building page: features & scope
   ============================================ */
.section--link-building-features {
  position: relative;
  padding: 64px 20px 80px;
  overflow: visible;
  background-color: var(--color-base);
  background-image: url(../images/features-bg.webp);
  background-repeat: no-repeat;
  background-position: right bottom;
  background-size: 60% auto;
}

.link-building-features {
  position: relative;
}

.link-building-features__inner {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.link-building-features__header {
  width: 100%;
  display: flex;
  justify-content: center;
}

.link-building-features__title-box {
  position: relative;
  display: inline-block;
  padding: 0 12px 12px 0;
}

.link-building-features__title-box::after {
  content: "";
  position: absolute;
  top: 12px;
  left: 12px;
  width: calc(100% - 12px);
  height: calc(100% - 12px);
  border: 1px solid var(--color-main);
  border-top-left-radius: 15px;
  border-bottom-right-radius: 15px;
  z-index: 0;
  pointer-events: none;
}

.link-building-features__title {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 18px 40px;
  font-family: "Noto Serif JP", serif;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-main);
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-main);
  border-top-left-radius: 15px;
  border-bottom-right-radius: 15px;
}

.link-building-features__list {
  width: 100%;
  margin: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 40px;
  font-family: "Noto Serif JP", serif;
}

.link-building-features__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 8fr);
  column-gap: 32px;
  align-items: start;
  padding: 32px 40px;
  overflow: visible;
  background-color: var(--color-white);
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.link-building-features__number {
  grid-column: 1;
  grid-row: 1;
  position: absolute;
  top: 0;
  left: 0;
  font-size: 8.5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-main);
  opacity: 0.22;
  transform: translateY(-60%) skewX(-15deg);
  transform-origin: center bottom;
  pointer-events: none;
  user-select: none;
}

.link-building-features__content {
  grid-column: 2;
  grid-row: 1;
  position: relative;
  z-index: 1;
  min-width: 0;
}

.link-building-features__item-title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-features__divider {
  margin: 12px 0 16px;
  border: none;
  height: 2px;
  background-color: var(--color-blue);
}

.link-building-features__text {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.85;
  color: var(--color-font);
}

.link-building-features__highlight {
  color: var(--color-main);
  font-weight: inherit;
}

.link-building-features__highlight--strong {
  font-weight: 700;
}

.link-building-features__scope {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 28px;
}

.link-building-features__scope-title {
  margin: 0;
  width: 100%;
  font-family: "Noto Serif JP", serif;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
  text-align: center;
}

.link-building-features__scope-grid {
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  justify-items: stretch;
}

.link-building-features__scope-item {
  width: 100%;
}

.link-building-features__scope-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
}

.link-building-features__scope-card-title {
  margin: 0;
  padding: 12px 16px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-white);
  text-align: center;
  background-color: var(--color-main);
}

.link-building-features__scope-card-text {
  flex: 1;
  margin: 0;
  padding: 16px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--color-font);
  background-color: var(--color-base-b);
  text-align: center;
}

/* ============================================
   Link building page: comparison table
   ============================================ */
.section--link-building-comparison {
  padding: 64px 20px 80px;
  background-color: var(--color-white);
}

.link-building-comparison__inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.link-building-comparison__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: none;
  margin: 0;
  text-align: center;
}

.link-building-comparison__title.section-label {
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 0;
  max-width: 720px;
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-comparison__slash.label-separator {
  margin: 0 auto;
}

.link-building-comparison__table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.link-building-comparison__table {
  --comparison-head-syvix-block: 64px;
  width: 100%;
  min-width: 720px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
  background-color: var(--color-white);
}

.link-building-comparison__corner,
.link-building-comparison__row-label {
  width: 18%;
  padding: 16px 12px;
  font-family: "Noto Serif JP", serif;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
  text-align: center;
  vertical-align: middle;
  background-color: var(--color-base);
  border-bottom: 1px solid #e0e0e0;
}

.link-building-comparison__corner {
  padding: 0;
  border-bottom: none;
  background-color: transparent;
}

.link-building-comparison__head {
  width: 25%;
  text-align: center;
  vertical-align: middle;
  border-bottom: 1px solid #e0e0e0;
}

.link-building-comparison__cell {
  width: 25%;
  padding: 20px 16px;
  text-align: center;
  vertical-align: middle;
  border-bottom: 1px solid #e0e0e0;
}

.link-building-comparison__head--syvix,
.link-building-comparison__cell--syvix {
  width: 33%;
  border-left: 2px solid var(--color-main);
  border-right: 2px solid var(--color-main);
  background-color: var(--color-base-b);
}

.link-building-comparison__head--syvix {
  padding: 16px;
  background-color: var(--color-main);
  border-top: 2px solid var(--color-main);
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

.link-building-comparison__head--other {
  padding: 0;
  background-color: transparent;
  vertical-align: bottom;
}

.link-building-comparison__head-label {
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 100%;
  height: calc(var(--comparison-head-syvix-block) * 0.75);
  padding: 0 12px;
  font-family: "Noto Serif JP", serif;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-white);
  background-color: #c5c5c5;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
}

.link-building-comparison__logo {
  display: block;
  width: auto;
  max-width: 120px;
  height: 32px;
  margin: 0 auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.link-building-comparison__cell-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 88px;
}

.link-building-comparison__icon-wrap,
.link-building-comparison__value-wrap {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 52px;
}

.link-building-comparison__price {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-main);
}

.link-building-comparison__price--split {
  color: var(--color-font);
}

.link-building-comparison__price--syvix.link-building-comparison__price--split {
  color: var(--color-main);
}

.link-building-comparison__price-lg {
  font-size: 28px;
  font-weight: 700;
}

.link-building-comparison__price--syvix .link-building-comparison__price-lg {
  font-size: 40px;
}

.link-building-comparison__price-sm {
  font-size: 16px;
  font-weight: 600;
}

.link-building-comparison__price--syvix .link-building-comparison__price-sm {
  font-size: 24px;
  font-weight: 700;
}

.link-building-comparison__text {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-font);
}

.link-building-comparison__note {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  color: #757575;
}

.link-building-comparison__icon {
  display: block;
  width: auto;
  height: 30px;
  margin: 0 auto;
}

.link-building-comparison__icon--double {
  height: 45px;
}

.link-building-comparison__table tbody .link-building-comparison__row-label,
.link-building-comparison__table tbody .link-building-comparison__cell {
  border-bottom: 1px solid #d9d9d9;
}

.link-building-comparison__table tbody .link-building-comparison__row-label {
  border-left: 1px solid #d9d9d9;
  border-right: 1px solid #d9d9d9;
}

.link-building-comparison__table
  tbody
  .link-building-comparison__cell:not(.link-building-comparison__cell--syvix) {
  border-right: 1px solid #d9d9d9;
}

.link-building-comparison__table
  tbody
  tr:first-child
  .link-building-comparison__row-label,
.link-building-comparison__table
  tbody
  tr:first-child
  .link-building-comparison__cell {
  border-top: 1px solid #d9d9d9;
}

.link-building-comparison__table
  tbody
  tr:last-child
  .link-building-comparison__cell--syvix {
  border-bottom: 2px solid var(--color-main);
}

/* ============================================
   Link building page: articles
   ============================================ */
.section--link-building-articles {
  padding: 64px 20px 80px;
  background-color: var(--color-base-b);
}

.link-building-articles__inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.link-building-articles__header {
  width: 100%;
  text-align: center;
}

.link-building-articles__title {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-articles__grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.link-building-articles__card {
  min-width: 0;
  overflow: visible;
}

.link-building-articles__card-link {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  align-items: stretch;
  max-height: auto;
  text-decoration: none;
  color: inherit;
  margin-top: 30px;
  margin-left: 30px;
  background-color: var(--color-base-b);
  border: 1px solid var(--color-main);
}

.link-building-articles__media {
  position: relative;
  top: -30px;
  left: -30px;
  z-index: 2;
  align-self: stretch;
  height: 100%;
  width: auto;
  aspect-ratio: 1 / 1;
  max-height: 140px;
  overflow: hidden;
  background-color: var(--color-bg);
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
}

.link-building-articles__thumbnail {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.link-building-articles__content {
  position: relative;
  z-index: 1;
  min-width: 0;
  padding: 20px;
}

.link-building-articles__card--no-media .link-building-articles__card-link {
  display: block;
  margin-top: 20px;
  margin-left: 0;
  background-color: var(--color-white);
}

.link-building-articles__card--no-media .link-building-articles__content {
  padding: 15px 10px 15px 10px;
  background-color: var(--color-white);
  margin-top: 0;
  margin-left: 0;
}

.link-building-articles__badge {
  display: inline-block;
  padding: 5px 15px;
  border: 1px solid var(--color-main);
  border-radius: 999px;
  background-color: var(--color-white);
  color: var(--color-main);
  font-size: 13px;
  font-weight: 700;
  font-family: Noto sans-serif;
  line-height: 1.4;
}

.link-building-articles__card-title {
  margin: 8px 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-dark);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
}

.link-building-articles__date {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-articles__footer {
  width: 100%;
  display: flex;
  justify-content: flex-end;
}

.link-building-articles__more.card-link {
  font-size: 16px;
  font-weight: 600;
  gap: 12px;
}

.link-building-articles__more .card-link__icon {
  width: 48px;
  height: 48px;
}

.link-building-articles__more .card-link__icon::after {
  width: 12px;
  height: 12px;
}

/* ============================================
   Link building page: expert profile
   ============================================ */
.section--link-building-expert {
  padding: 64px 20px;
  background-color: var(--color-white);
}

.link-building-expert__inner {
  max-width: 1000px;
  margin: 0 auto;
}

.link-building-expert__card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  padding: 30px 0 0 30px;
  overflow: visible;
}

.link-building-expert__figure {
  z-index: 2;
  margin: -30px 0 0 -30px;
  transform: translateY(-30px);
}

.link-building-expert__photo {
  display: block;
  width: 280px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: cover;
}

.link-building-expert__body {
  margin-left: -120px;
  padding: 30px 30px 30px 150px;
  background-color: var(--color-base);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.link-building-expert__heading {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-expert__divider {
  margin: 16px 0;
  border: none;
  height: 2px;
  background-color: var(--color-blue);
}

.link-building-expert__name {
  margin: 0 0 16px;
  font-family: "Noto Serif JP", serif;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-font);
}

.link-building-expert__bio {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.85;
  color: var(--color-font);
}

/* ============================================
   Link building page: service flow
   ============================================ */
.section--link-building-flow {
  padding: 0 20px 80px;
  background-color: var(--color-white);
}

.link-building-flow__inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.link-building-flow__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: none;
  margin: 0;
  text-align: center;
}

.link-building-flow__title.section-label {
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-flow__slash.label-separator {
  margin: 0 auto;
}

.link-building-flow__list {
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.link-building-flow__item {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.link-building-flow__step {
  width: 100%;
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: start;
  gap: 24px;
  padding: 28px 32px;
  background-color: var(--color-base-b);
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
}

.link-building-flow__number {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-main);
  color: var(--color-white);
  font-family: "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

.link-building-flow__icon-wrap {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
}

.link-building-flow__icon {
  display: block;
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.link-building-flow__step-title {
  margin: 0 0 4px;
  font-family: "Noto Serif JP", serif;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-font);
}

.link-building-flow__step-text {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.75;
  color: var(--color-font);
}

.link-building-flow__connector {
  display: block;
  margin: 12px auto;
  line-height: 0;
  text-align: center;
}

.link-building-flow__connector-icon {
  display: block;
  width: 36px;
  height: auto;
  margin: 0 auto;
}

/* ============================================
   Link building page: FAQ
   ============================================ */
.section--link-building-faq {
  padding: 80px 20px;
  background-color: #dfdfdf;
}

.link-building-faq__inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.link-building-faq__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: none;
  margin: 0;
  text-align: center;
}

.link-building-faq__title.section-label {
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-font);
}

.link-building-faq__slash.label-separator {
  margin: 0 auto;
}

.link-building-faq__list {
  width: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.link-building-faq__item {
  margin: 0;
  overflow: hidden;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.link-building-faq__term {
  margin: 0;
}

.link-building-faq__question,
.link-building-faq__answer {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
}

.link-building-faq__question {
  width: 100%;
  padding: 16px 24px;
  border: none;
  background-color: var(--color-main);
  border-top-left-radius: 25px;
  color: var(--color-white);
  font-family: "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  appearance: none;
}

.link-building-faq__toggle {
  display: none;
  flex-shrink: 0;
  align-self: center;
  position: relative;
  width: 16px;
  height: 16px;
  margin-left: auto;
}

.link-building-faq__toggle::before,
.link-building-faq__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: var(--color-white);
  transform: translate(-50%, -50%);
}

.link-building-faq__toggle::before {
  width: 14px;
  height: 2px;
}

.link-building-faq__toggle::after {
  width: 2px;
  height: 14px;
  transition: opacity 0.2s ease;
}

.link-building-faq__question[aria-expanded="true"]
  .link-building-faq__toggle::after {
  opacity: 0;
}

.link-building-faq__answer {
  padding: 20px 24px;
  background-color: var(--color-white);
  border-bottom-right-radius: 25px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.75;
  color: var(--color-font);
}

.link-building-faq__answer[hidden] {
  display: none;
}

.link-building-faq__label {
  flex-shrink: 0;
  font-family: "Noto Serif JP", serif;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
}

.link-building-faq__label--q {
  color: var(--color-white);
}

.link-building-faq__label--a {
  color: var(--color-main);
}

.link-building-faq__question-text,
.link-building-faq__answer-text {
  flex: 1;
  min-width: 0;
  white-space: pre-line;
}

/* ============================================
   コンセプトセクション
   ============================================ */
.section--concept {
  background-color: var(--color-main);
}

.concept {
  max-width: 1000px;
  height: 380px;
  border-top-left-radius: 80px;
  border-bottom-right-radius: 80px;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  position: relative;
  bottom: 80px;
  background-color: var(--color-white);
  box-shadow: 0 0 10px 3px rgba(0, 0, 0, 0.15);
}

.concept-content {
  margin: 50px 40px 50px 60px;
}

.concept-label {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 64px;
  line-height: 64px;
}

.concept-title {
  font-size: 30px;
  font-weight: bold;
  margin: 10px auto 15px;
}

.concept-lead {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}

.concept__image {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ============================================
   サービスセクション
   ============================================ */
.section--service {
  background-color: var(--color-white);
}

.service {
  max-width: 1000px;
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 30px;
  background-color: var(--color-white);
}

.service-label {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  align-items: center;
}

.service-label > .label-separator {
  order: -1;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.service-card {
  display: flex;
  flex-direction: column;
  scroll-margin-top: 100px;
}

/* 奇数・偶数で背景色を変更 */
.service-card:nth-child(odd) .service-card__content {
  background-color: var(--color-base-b);
}

.service-card:nth-child(even) .service-card__content {
  background-color: var(--color-base);
}

.service-card__icon {
  width: 286px;
  height: 180px;
  border-top-left-radius: 40px;
  border-bottom-right-radius: 40px;
  background-color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 20;
  box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.15);
}

.service-card__content {
  padding: 150px 20px 20px;
  position: relative;
  margin: -130px 0 0 30px;
  z-index: 10;
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.service-card__content .service-card__link,
.service-card__coming-soon {
  align-self: flex-end;
  margin-top: auto;
  text-align: right;
}

.service-card__coming-soon {
  margin-bottom: 0;
  color: var(--color-font);
  font-weight: 600;
}

.service-card__title {
  margin: 0;
  font-size: 22px;
  color: var(--color-font);
  font-weight: bold;
  text-align: center;
  margin-bottom: 10px;
}

.service-card__title br.syvix-break-sp {
  display: block;
}

.service-card__body {
  margin: 0;
  line-height: 1.6;
  color: var(--color-font);
  font-size: 16px;
  font-weight: 600;
  overflow: visible;
}

/* サービスカードアイコン画像の個別サイズ（PCのみ） */
@media (min-width: 1081px) {
  .service-card:nth-child(1) .service-card__icon-image {
    width: 96px;
    height: 88px;
  }

  .service-card:nth-child(2) .service-card__icon-image {
    width: 119px;
    height: 92px;
  }

  .service-card:nth-child(3) .service-card__icon-image {
    width: 87px;
    height: 97px;
  }

  .service-card:nth-child(4) .service-card__icon-image {
    width: 98px;
    height: 92px;
  }

  .service-card:nth-child(5) .service-card__icon-image {
    width: 121px;
    height: 79px;
  }

  .service-card:nth-child(6) .service-card__icon-image {
    width: 88px;
    height: 100px;
  }
}

/* カードリンク（共通コンポーネント） */
.card-link {
  text-decoration: none;
  color: var(--color-font);
  font-weight: 600;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.card-link__icon {
  width: 42px;
  height: 42px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  border-radius: 9999px;
  border: solid 1px var(--color-font);
  transition: 0.2s ease;
}

.card-link__icon::after {
  content: "";
  clip-path: polygon(7.25% 0%, 93.85% 50%, 7.25% 100%);
  background-color: var(--color-font);
  width: 10px;
  height: 10px;
}

.card-link:hover .card-link__icon {
  background-color: var(--color-font);
}

.card-link:hover .card-link__icon::after {
  background-color: var(--color-white);
}

/* ============================================
   実績セクション
   ============================================ */
/* TOP: コラムは一時非表示（復帰時は front-page/main.php の if ( false ) も解除） */
.home .section--column {
  display: none !important;
}

.section--works {
  background-image: url(../images/works-bg.svg);
  background-size: cover;
  background-color: var(--color-base);
}

.works {
  max-width: 1000px;
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 30px;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  width: 100%;
}

.works-swiper {
  display: none;
  width: 100%;
  overflow: hidden;
}

.works-swiper .swiper-slide {
  width: 295px;
  height: auto;
}

.works-swiper .swiper-wrapper {
  display: flex;
  align-items: stretch;
}

.works-swiper .swiper-pagination {
  bottom: 40px !important;
  position: relative;
  bottom: auto;
  margin-top: 20px;
}

.works-swiper .swiper-pagination-bullet {
  background-color: var(--color-main);
  opacity: 0.3;
  width: 10px;
  height: 10px;
}

.works-swiper .swiper-pagination-bullet-active {
  opacity: 1;
}

/* 実績カード */
.works-card {
  min-width: 0;
  background-color: var(--color-white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 0px 10px rgba(0, 0, 0, 0.15);
}

a.works-card--linked {
  display: block;
  color: inherit;
  text-decoration: none;
}

a.works-card--linked:hover .works-card__title {
  text-decoration: underline;
}

.works-card__media {
  position: relative;
  overflow: hidden;
  min-height: 180px;
  background-color: var(--color-bg);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
}

.works-thumbnail {
  inset: 0;
  width: 100%;
  max-width: 100%;
  /* height: 100%; */
  object-fit: cover;
  display: block;
  aspect-ratio: 16 / 9;
}

.works-image__badge {
  position: absolute;
  z-index: 1;
  left: 10px;
  bottom: 10px;
  padding: 5px 15px;
  border-radius: 999px;
  background-color: var(--color-white);
  color: var(--color-main);
  font-size: 13px;
  font-weight: bold;
  border: solid 1px var(--color-main);
}

.works-card__content {
  min-width: 0;
  padding: 20px;
}

.works-card__title {
  font-size: 20px;
  font-weight: bold;
  color: var(--color-main);
}

.works-card > .works-card__content .works-card__title {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.5;
}

.works-card__info {
  list-style: none;
  padding: 0;
  margin: 5px 0 12px;
  display: grid;
  gap: 8px;
}

.works-card__info-item {
  display: flex;
  gap: 12px;
  align-items: baseline;
  min-width: 0;
}

.works-card__info-label {
  min-width: 48px;
  font-weight: bold;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 14px;
  background-color: var(--color-base);
}

.works-card__info-value {
  color: #bdbdbd;
  font-size: 13px;
  font-weight: 600;
  font-family: "Noto Sans JP", sans-serif;
}

.works-card > .works-card__content .works-card__info-value {
  flex: 1;
  min-width: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  overflow: hidden;
  line-height: 1.5;
}

.works-card > .works-card__content .works-card__info-item--result .works-card__info-value {
  -webkit-line-clamp: 2;
  line-clamp: 2;
}

.works-card__info-item--result .works-card__info-label {
  background-color: var(--color-main);
  color: var(--color-white);
}

.works-card__info-item--result .works-card__info-value {
  color: var(--color-main);
  font-weight: 600;
  font-family: "Noto Sans JP", sans-serif;
}

.works-card__note {
  background-color: var(--color-base-b);
  padding: 10px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  justify-items: center;
  align-items: flex-start;
  color: var(--color-font);
}

.works-card__note-label {
  font-weight: bold;
  font-size: 14px;
  line-height: 1.5;
}

.works-card__note-value {
  font-size: 13px;
  font-weight: 600;
  font-family: "Noto Sans JP", sans-serif;
}

.works-card > .works-card__content .works-card__note-value {
  width: 100%;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  overflow: hidden;
  line-height: 1.5;
}

.works .card-link {
  margin-left: auto;
  font-size: 20px;
  font-weight: bold;
  gap: 15px;
}

.works .card-link__icon {
  width: 60px;
  height: 60px;
}

.works .card-link__icon::after {
  width: 15px;
  height: 15px;
}

/* ============================================
   コラムセクション
   ============================================ */
.section--column {
  background-color: var(--color-white);
}

.section--column .shell.column {
  max-width: 1000px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "heading grid"
    "viewall grid";
  gap: 40px;
  align-items: start;
}

.section--column .shell.column .section-heading {
  grid-area: heading;
}

.section--column .shell.column .column-grid {
  grid-area: grid;
}

.section--column .shell.column .column__view-all {
  grid-area: viewall;
  align-self: start;
}

.column .section-heading {
  display: flex;
  gap: 10px;
  flex-direction: column;
}

.column-label {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 64px;
  line-height: 64px;
  width: 100%;
}

.section--column .column .card-link,
.section--column .column__view-all {
  margin-right: auto;
  font-size: 20px;
  font-weight: bold;
  gap: 15px;
  justify-content: flex-start;
}

.section--column .column .card-link__icon,
.section--column .column__view-all .card-link__icon {
  width: 60px;
  height: 60px;
}

.section--column .column .card-link__icon::after,
.section--column .column__view-all .card-link__icon::after {
  width: 15px;
  height: 15px;
}

.column-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.column-card {
  min-width: 0;
  min-height: 140px;
  display: grid;
  grid-template-columns: auto 1fr;
}

.column-card__link {
  display: contents;
  color: inherit;
  text-decoration: none;
}

.column-card__media {
  position: relative;
  overflow: hidden;
  width: 140px;
  height: 140px;
  background-color: var(--color-bg);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  border-top-left-radius: 20px;
  border-bottom-right-radius: 20px;
  z-index: 20;
}

.column-thumbnail {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 1 / 1;
}

.column-card__content {
  min-width: 0;
  padding: 15px 10px 15px 10px;
  background-color: var(--color-white);
  border: solid 1px var(--color-main);
  margin-top: 20px;
  margin-left: 0;
}

.column-image__badge {
  padding: 5px 15px;
  border-radius: 999px;
  background-color: var(--color-white);
  color: var(--color-main);
  border: solid 1px var(--color-main);
  width: fit-content;
  font-size: 13px;
  font-weight: bold;
}

.column-card__title {
  margin: 5px 0;
  font-size: 16px;
  color: var(--color-dark);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.5;
}

.column-card__date {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 5px;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 2;
}

/* ============================================
   フッター
   ============================================ */
.footer {
  background-color: var(--color-base-b);
}

/* CTAバナー */
.section--cta-banner {
  padding: 80px 0;
  overflow: visible;
  background-color: var(--color-main);
  background-image: url(../images/footer-bg.svg);
  background-repeat: no-repeat;
  background-size: cover;
}

.cta-banner {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 40px;
  overflow: visible;
  color: var(--color-white);
}

.cta-banner__content {
  display: grid;
  justify-items: center;
  align-items: center;
  gap: 10px;
}

.cta-banner__title {
  font-size: 38px;
  font-family: "Noto Serif JP";
  font-weight: bold;
}

.cta-banner__separator {
  display: inline;
}

.cta-banner__break {
  display: none;
}

.cta-banner__label {
  font-size: 20px;
  font-weight: bold;
}

.cta-banner__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: visible;
}

.cta-banner__badge-container {
  position: relative;
  overflow: visible;
}

.cta-banner__cta .cta-banner__btn,
.cta-banner__badge-container .btn--hero {
  width: 360px;
  max-width: 100%;
  height: 72px;
  margin-top: 28px;
  padding-right: 48px;
  justify-content: center;
  border: none;
}

.cta-banner__cta .cta-banner__btn:hover,
.cta-banner__badge-container .btn--hero:hover {
  border: none;
}

.cta-banner__badge {
  position: absolute;
  display: inline-flex;
  align-items: flex-end;
  line-height: 1;
  vertical-align: bottom;
  justify-content: center;
  padding: 5px 45px;
  border-radius: 999px;
  background-color: var(--color-white);
  color: var(--color-main);
  font-weight: bold;
  font-size: 16px;
  border: solid 2px var(--color-main);
  z-index: 2;
  left: 50%;
  top: 8px;
  transform: translateX(-50%);
  white-space: nowrap;
  width: fit-content;
  cursor: none;
  pointer-events: none;
}

.cta-banner__badge::before {
  content: "";
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translate(-50%, 0);
  width: 22px;
  height: 22px;
  background-color: var(--color-main);
  clip-path: polygon(50% 40%, 25% 0, 75% 0);
  z-index: -1;
}

.cta-banner__badge::after {
  content: "";
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translate(-50%, -2px);
  transform-origin: bottom center;
  width: 22px;
  height: 22px;
  background-color: var(--color-white);
  clip-path: polygon(50% 40%, 25% 0, 75% 0);
  z-index: 11;
}

.cta-banner__badge-highlight {
  background: var(--color-red-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 22px;
}

/* フッターコンテンツ */
.footer__container {
  padding: 50px 0 40px;
}

.footer__content {
  max-width: 1000px;
  height: 190px;
  margin: auto;
  display: grid;
  grid-template-columns: auto auto;
  justify-content: space-between;
}

.footer__left {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.footer__logo {
  width: 220px;
  height: 60px;
  object-fit: contain;
}

.footer__copyright-text {
  font-size: 14px;
  line-height: 2;
}

.footer__copyright-title {
  font-size: 18px;
  font-weight: bold;
}

.footer__right {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  row-gap: 20px;
  column-gap: 40px;
  align-content: flex-start;
  height: fit-content;
  max-height: 190px;
}

.footer__right-item {
  display: flex;
  flex-direction: column;
  padding-left: 20px;
  border-left: 1px solid var(--color-main);
  min-width: 200px;
  font-weight: bold;
  line-height: 1.8;
}

.footer__right-item--last {
  border-left: none;
  padding-left: 0;
  margin-top: auto;
}

.footer__right-label {
  font-size: 18px;
  color: var(--color-main);
}

.footer__link {
  font-size: 14px;
  text-decoration: none;
  color: var(--color-font);
  position: relative;
  display: inline-block;
}

.footer__link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

.footer__link:hover,
.footer__link:focus-visible {
  color: var(--color-main);
}

.footer__link:hover::after,
.footer__link:focus-visible::after {
  width: 100%;
}

.footer__copyright {
  display: flex;
  justify-content: center;
  padding-bottom: 20px;
}

/* ============================================
   パンくずリスト（横スクロール対応）
   ============================================ */
.breadcrumb {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 2px;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--color-main) var(--color-base);
  /* 常にスクロールバーを表示 */
  scrollbar-gutter: stable;
}

.breadcrumb .breadcrumb__list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: max-content;
  max-width: none;
  min-width: min-content;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb .breadcrumb__item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  white-space: nowrap;
}

.breadcrumb .breadcrumb__item--current span {
  white-space: nowrap;
}

.breadcrumb::-webkit-scrollbar {
  height: 6px;
  display: block;
  /* 常にスクロールバーを表示 */
  -webkit-appearance: none;
}

.breadcrumb::-webkit-scrollbar-track {
  background: var(--color-base);
}

.breadcrumb::-webkit-scrollbar-thumb {
  background-color: var(--color-main);
  border-radius: 3px;
}

.breadcrumb::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-font);
}

/* ============================================
   メディアクエリ（モバイル対応）
   ============================================ */
/* 最小幅375px・フロントページ等の差分（リンクビルディング SP は 1080px 以下） */
@media (max-width: 375px) {
  body {
    min-width: 375px;
  }

  .site-header {
    padding: 10px 15px;
  }

  .section--hero {
    padding: 60px 15px 120px;
    background-image: url(../images/top-fv-sp-bg.svg);
  }

  .hero__title {
    font-size: 36px;
    word-break: keep-all;
    overflow-wrap: break-word;
  }

  .hero__title-sub {
    font-size: 24px;
  }

  .hero__title-highlight {
    font-size: 30px;
  }

  .hero__lead {
    font-size: 20px;
  }

  .btn--hero {
    width: 260px;
    font-size: 14px;
  }

  /* リンクビルディング：1080px 以下と差分のみ */
  .section--link-building-hero {
    padding: 60px 15px 100px;
    background-image: url(../images/top-fv-sp-bg.svg);
  }

  .link-building-hero__tagline {
    padding: 10px 20px;
    font-size: 16px;
  }

  .link-building-hero__stat {
    flex: 1 1 100%;
    max-width: none;
  }

  .link-building-hero__stat-value {
    font-size: 28px;
  }

  .link-building-hero__stat-unit {
    font-size: 22px;
  }

  .link-building-hero__cta .link-building-hero__btn {
    width: 260px;
    height: 60px;
    font-size: 14px;
  }

  .concept-content {
    padding: 15px;
  }

  .service-grid {
    padding: 0 15px;
  }

  .column-grid {
    padding: 0 15px;
  }

  .section--cta-banner {
    background-image: url(../images/footer-sp-bg.svg);
  }

  .cta-banner__content {
    padding: 0 15px;
  }
}

@media (max-width: 1080px) {
  /* セクション共通（各 section--* で上書き） */
  .section {
    padding: 50px 0;
  }

  /* 実績（Works）: SP はスライダー */
  .works-grid {
    display: none;
  }

  .works-swiper {
    display: block;
    padding: 0 20px;
  }

  .section--works {
    background-image: url(../images/works-sp-bg.svg);
    background-repeat: no-repeat;
    background-position-y: -3rem;
    background-size: contain;
  }

  /* ヘッダー */
  .site-header {
    padding: 10px 20px;
  }

  .site-header.is-sticky {
    padding: 10px 20px;
  }

  .site-logo__image {
    width: 123px;
  }

  /* ナビゲーション */
  .site-nav {
    flex-wrap: wrap;
    gap: 0;
  }

  .site-nav__content {
    order: 3;
    width: 100%;
    display: none;
    flex-direction: column;
    gap: 20px;
    padding-top: 20px;
  }

  .site-nav__content.is-open {
    display: block;
    padding: 40px;
  }

  .site-nav__mobile-controls {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-links {
    display: none;
  }

  .nav-accordion {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }

  .nav-divider {
    display: none;
  }

  .site-nav__content .cta-button {
    display: none;
  }

  /* ヒーローセクション */
  .section--hero {
    padding: 80px 30px 160px;
  }

  .hero {
    padding: 0;
    width: fit-content;
  }

  .hero__title {
    font-size: 44px;
    word-break: keep-all;
    overflow-wrap: break-word;
  }

  .hero__title-sub {
    font-size: 30px;
  }

  .hero__title-highlight {
    font-size: 38px;
  }

  .hero__lead {
    font-size: 25px;
    margin-bottom: 60px;
  }

  .btn--hero {
    width: 280px;
    height: 60px;
    font-size: 16px;
    padding: 10px 0;
    justify-content: center;
  }

  /* ----- Link building page (SP) ----- */
  .section--link-building-hero {
    padding: 70px 30px 120px;
  }

  .link-building-hero__title {
    font-size: 30px;
  }

  .link-building-hero__title-em {
    font-size: 38px;
  }

  .link-building-hero__tagline {
    font-size: 18px;
    padding: 10px 32px;
  }

  .link-building-hero__stat-value {
    font-size: 30px;
  }

  .link-building-hero__stat-unit {
    font-size: 22px;
  }

  .link-building-hero__cta .link-building-hero__btn {
    width: 300px;
  }

  .syvix-link-building-page .section--link-building-hero {
    display: none;
  }

  .section--link-building-service-sp {
    display: block;
    padding: 28px 15px 32px;
  }

  .syvix-llmo-page .section--link-building-service-sp {
    display: none !important;
  }

  .link-building-service-sp__icon-image {
    width: 60px;
  }

  .link-building-service-sp__name {
    font-size: 16px;
  }

  .section--link-building-intro {
    padding: 24px 15px 60px;
  }

  .link-building-intro__nav {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    width: 100%;
    gap: 12px;
  }

  .link-building-intro__nav-btn.btn--hero {
    order: 0;
    width: 100%;
    max-width: 90%;
    min-height: 64px;
    margin: 0;
    padding: 14px 36px;
    font-size: 16px;
  }

  .link-building-intro__nav-btn.btn--hero[href="#achievements"] {
    order: 1;
  }

  .link-building-intro__nav-btn.btn--hero[href="#features"] {
    order: 2;
  }

  .link-building-intro__nav-btn.btn--hero[href="#scope"] {
    order: 3;
  }

  .link-building-intro__panel {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 40px;
  }

  .link-building-intro__media {
    align-items: center;
  }

  .link-building-intro__media-inner {
    aspect-ratio: auto;
  }

  .link-building-intro__image {
    position: static;
    left: auto;
    bottom: auto;
    width: 100%;
    max-width: 100%;
    transform: none;
  }

  .link-building-intro__lead {
    font-size: 16px;
    margin-bottom: 16px;
  }

  .link-building-intro__text {
    font-size: 14px;
  }

  .section--seo-intro .seo-intro-kw-cards,
  .section--llmo-intro .seo-intro-kw-cards {
    display: none;
  }

  .section--seo-intro .link-building-intro__nav {
    margin-bottom: 48px;
  }

  .section--llmo-intro .link-building-intro__nav {
    margin-bottom: 48px;
  }

  .syvix-link-building-page .section--link-building-intro {
    padding: 20px 15px 48px;
  }

  .syvix-link-building-page .link-building-intro {
    gap: 20px;
  }

  .syvix-link-building-page .link-building-intro__breadcrumb .breadcrumb__list {
    flex-wrap: nowrap;
  }

  .syvix-link-building-page .link-building-intro__nav {
    margin-bottom: 80px;
  }

  .syvix-link-building-page .link-building-intro__nav-label {
    flex: 0 1 auto;
    font-size: 16px;
    text-align: center;
  }

  .section--link-building-intro .link-building-intro__panel,
  .syvix-link-building-page .link-building-intro__panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    margin-top: 2rem;
    padding: 48px 20px 32px;
    overflow: visible;
  }

  .section--link-building-intro .link-building-intro__media,
  .syvix-link-building-page .link-building-intro__media {
    order: -1;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    margin-top: -100px;
    margin-bottom: -8px;
    overflow: visible;
  }

  .section--link-building-intro .link-building-intro__media-inner,
  .syvix-link-building-page .link-building-intro__media-inner {
    width: auto;
    max-width: min(280px, 100%);
  }

  .section--link-building-intro .link-building-intro__image,
  .syvix-link-building-page .link-building-intro__image {
    position: relative;
    left: auto;
    bottom: auto;
    display: block;
    width: 100%;
    max-width: 280px;
    height: auto;
    margin: 0 auto;
    transform: none;
  }

  .syvix-link-building-page .link-building-intro__content {
    width: 100%;
    text-align: left;
  }

  .syvix-link-building-page .link-building-intro__lead,
  .syvix-link-building-page .link-building-intro__text {
    font-family: "Noto Serif JP", serif;
    font-size: 17px;
    font-weight: 600;
    font-feature-settings: "palt";
    line-height: 1.85;
    text-align: left;
    color: var(--color-font);
  }

  .syvix-link-building-page .link-building-intro__lead {
    margin-bottom: 0;
  }

  .section--link-building-achievements {
    padding: 0 0 64px;
    padding-bottom: 0;
  }

  .link-building-achievements__hero {
    padding: 48px 15px 48px;
  }

  .link-building-achievements__heading.service-label {
    gap: 8px;
    font-size: 22px;
  }

  .link-building-achievements__lead.label-sub {
    font-size: 16px;
  }

  .link-building-achievements__cases {
    padding: 48px 15px 48px;
  }

  .link-building-achievements__cases-slider {
    position: relative;
  }

  .link-building-achievements-cases-swiper {
    width: 100%;
  }

  .link-building-achievements-cases-swiper .swiper-slide {
    width: min(295px, calc(100% - 30px));
  }

  .link-building-achievements-cases-swiper__pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    position: static;
    width: 100%;
    margin: 16px 0 0;
    padding: 0;
  }

  .link-building-achievements-cases-swiper__pagination
    .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    margin: 0 !important;
    background-color: var(--color-white);
    opacity: 0.35;
  }

  .link-building-achievements-cases-swiper__pagination
    .swiper-pagination-bullet-active {
    opacity: 1;
  }

  .link-building-achievements__logos {
    padding: 20px 0 24px;
  }

  .link-building-achievements-logos-swiper .swiper-slide {
    width: 160px;
  }

  .link-building-achievements__logo-item {
    min-height: 72px;
    padding: 12px 16px;
  }

  .link-building-achievements__logo-placeholder {
    font-size: 12px;
  }

  .link-building-achievements__logo-image {
    max-height: 44px;
  }

  .section--link-building-customer {
    padding: 48px 15px 64px;
    background-size: min(72%, 280px);
  }

  .link-building-customer__inner {
    gap: 24px;
  }

  .link-building-customer__title.section-label {
    font-size: 22px;
    gap: 8px;
  }

  .link-building-customer__card {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 20px 32px;
    border-radius: 25px;
  }

  .link-building-customer__figure {
    width: 100%;
  }

  .link-building-customer__illustration {
    max-width: 220px;
    margin: 0 auto;
  }

  .link-building-customer__list {
    gap: 12px;
  }

  .link-building-customer__list-item {
    gap: 8px;
    font-size: 14px;
    line-height: 1.75;
  }

  .link-building-customer__check {
    width: 24px;
    height: 27px;
    margin-top: 0.3em;
  }

  .link-building-customer__text {
    display: block;
  }

  .link-building-customer__line,
  .link-building-customer__emphasis {
    display: inline;
  }

  .link-building-customer__emphasis {
    padding: 0;
    font-weight: 700;
    color: var(--color-main);
  }

  .link-building-customer__solution {
    margin-top: 4px;
  }

  .link-building-customer__solution-lead {
    margin: 0;
  }

  .link-building-customer__lead-lg {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    font-size: inherit;
  }

  .link-building-customer__marker--guarantee,
  .link-building-customer__lead-lg:not(
      :has(.link-building-customer__marker--guarantee)
    )
    .link-building-customer__marker--service {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.5;
    background: linear-gradient(
      transparent 62%,
      #fff600 62%,
      #fff600 92%,
      transparent 92%
    );
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
  }

  .link-building-customer__dot {
    width: 6px;
    height: 6px;
  }

  .link-building-customer__headline-row {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: center;
    gap: 0;
    line-height: 1.4;
  }

  .link-building-customer__lead-lg:has(
      .link-building-customer__marker--guarantee
    )
    .link-building-customer__marker--service {
    font-size: 26px;
    font-weight: 700;
    background: none;
  }

  .link-building-customer__headline-row .link-building-customer__lead-sm {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-main);
  }

  .link-building-customer__solution-text {
    margin-top: 4px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-font);
  }

  .link-building-customer__solution-plain--sp {
    display: none;
  }

  .link-building-customer__solution-rich {
    display: inline;
    font-size: 20px;
    font-weight: 700;
  }

  .link-building-customer__solution-rich .link-building-customer__lead-sm {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-font);
  }

  .link-building-customer__solution-rich .link-building-customer__bonten {
    font-size: 20px;
    color: var(--color-main);
  }

  .link-building-customer__solution-rich .link-building-customer__bonten-char {
    padding-top: 0.45em;
  }

  .link-building-customer__solution-rich
    .link-building-customer__bonten-char::before {
    top: 0.1em;
    width: 5px;
    height: 5px;
  }

  .link-building-customer__chevron {
    width: min(100%, 120px);
    margin-top: 8px;
  }

  .section--link-building-features {
    padding: 48px 15px 48px;
    background-size: min(100%, 320px);
  }

  .link-building-features__inner {
    gap: 32px;
  }

  .link-building-features__title-box {
    padding: 0 10px 10px 0;
    width: 100%;
  }

  .link-building-features__title-box::after {
    top: 10px;
    left: 10px;
    width: calc(100% - 10px);
    height: calc(100% - 10px);
    border-top-left-radius: 15px;
    border-bottom-right-radius: 15px;
  }

  .link-building-features__title {
    padding: 14px 20px;
    font-size: 22px;
    border-top-left-radius: 15px;
    border-bottom-right-radius: 15px;
  }

  .link-building-features__title-line {
    display: block;
  }

  .link-building-features__list {
    padding-top: 40px;
    gap: 48px;
  }

  .link-building-features__item {
    grid-template-columns: 1fr;
    column-gap: 0;
    padding: 48px 20px;
    border-bottom-left-radius: 20px;
    border-top-right-radius: 20px;
  }

  .link-building-features__number {
    position: absolute;
    top: -5rem;
    left: 0;
    width: 0;
    height: 0;
    overflow: visible;
    font-size: 60px;
    font-weight: 900;
    line-height: 1;
    white-space: nowrap;
    transform: translateY(-50%) skewX(-10deg);
    transform-origin: left bottom;
  }

  .link-building-features__content {
    grid-column: 1;
    grid-row: 1;
    width: 100%;
  }

  .link-building-features__item-title {
    font-size: 18px;
  }

  .link-building-features__text {
    font-size: 14px;
  }

  .link-building-features__scope-title {
    font-size: 20px;
  }

  .link-building-features__scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .link-building-features__scope-card-title {
    font-size: 13px;
    border-top-left-radius: 14px;
  }

  .link-building-features__scope-card-text {
    font-size: 12px;
    border-bottom-right-radius: 14px;
    padding: 6px;
  }

  .section--link-building-comparison {
    padding: 48px 15px 56px;
  }

  .link-building-comparison__inner {
    gap: 28px;
  }

  .link-building-comparison__title.section-label {
    font-size: 22px;
  }

  .link-building-comparison__table {
    min-width: 434px;
  }

  .link-building-comparison__corner,
  .link-building-comparison__row-label {
    width: 25%;
  }

  .link-building-comparison__head--syvix,
  .link-building-comparison__cell--syvix {
    width: 31%;
  }

  .link-building-comparison__head--syvix {
    padding: 12px;
  }

  .link-building-comparison__logo {
    width: 100%;
    max-width: none;
    height: auto;
  }

  .link-building-comparison__head-label {
    font-size: 9px;
  }

  .link-building-comparison__head--other,
  .link-building-comparison__cell:not(.link-building-comparison__cell--syvix) {
    width: 27%;
  }

  .link-building-comparison__cell,
  .link-building-comparison__corner,
  .link-building-comparison__row-label {
    padding: 8px;
  }

  .link-building-comparison__row-label {
    font-size: 12px;
  }

  .link-building-comparison__price {
    font-size: 22px;
    display: flex;
    align-items: center;
  }

  .link-building-comparison__price-lg,
  .link-building-comparison__price--syvix .link-building-comparison__price-lg {
    font-size: 20px;
  }

  .link-building-comparison__price-sm,
  .link-building-comparison__price--syvix .link-building-comparison__price-sm {
    font-size: 12px;
  }

  .link-building-comparison__icon-wrap,
  .link-building-comparison__value-wrap {
    height: 36px;
  }

  .link-building-comparison__icon {
    height: 24px;
  }

  .link-building-comparison__icon--double {
    height: 36px;
  }

  .link-building-comparison__text {
    font-size: 10px;
    font-weight: 700;
  }

  .link-building-comparison__note {
    font-size: 10px;
  }

  .section--link-building-articles {
    padding: 48px 15px 56px;
  }

  .link-building-articles__inner {
    gap: 28px;
  }

  .link-building-articles__title {
    font-size: 22px;
  }

  .link-building-articles__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .link-building-articles__card-link {
    grid-template-columns: 100px 1fr;
    max-height: none;
    margin-top: 20px;
    margin-left: 20px;
    align-items: center;
  }

  .link-building-articles__media {
    top: -40px;
    left: -20px;
    width: 100px;
    height: 100px;
    max-width: 100px;
    max-height: 100px;
    min-height: 0;
    align-self: center;
  }

  .link-building-articles__content {
    min-width: 0;
    padding: 12px 12px 12px 8px;
  }

  .link-building-articles__more.card-link {
    font-size: 14px;
  }

  .section--link-building-expert {
    padding: 80px 15px 48px;
    overflow: visible;
  }

  .link-building-expert__inner {
    overflow: visible;
  }

  .link-building-expert__card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    overflow: visible;
  }

  .link-building-expert__figure {
    z-index: 2;
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0 0 -80px;
    transform: none;
  }

  .link-building-expert__photo {
    width: min(220px, calc(100vw - 60px));
    max-width: 220px;
  }

  .link-building-expert__body {
    width: 100%;
    margin-left: 0;
    padding: 112px 24px 32px;
    text-align: center;
  }

  .link-building-expert__heading {
    font-size: 20px;
    text-align: left;
  }

  .link-building-expert__name {
    font-size: 24px;
    text-align: left;
  }

  .link-building-expert__bio {
    text-align: left;
  }

  .section--link-building-flow {
    padding: 0 15px 56px;
    overflow: visible;
  }

  .link-building-flow__item {
    overflow: visible;
  }

  .link-building-flow__title.section-label {
    font-size: 22px;
  }

  .link-building-flow__step {
    position: relative;
    grid-template-columns: minmax(64px, 72px) minmax(0, 1fr);
    grid-template-rows: auto;
    align-items: center;
    gap: 0 16px;
    padding: 28px 20px 24px;
    overflow: visible;
  }

  .link-building-flow__number {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    width: 44px;
    height: 44px;
    font-size: 14px;
    transform: translate(-35%, -35%);
  }

  .link-building-flow__icon-wrap {
    grid-column: 1;
    grid-row: 1;
    justify-content: center;
    justify-self: center;
    width: 56px;
    height: 56px;
    margin-top: 12px;
  }

  .link-building-flow__icon {
    width: 56px;
    height: 56px;
  }

  .link-building-flow__content {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    min-width: 0;
  }

  .section--link-building-faq {
    padding: 56px 15px;
  }

  .link-building-faq__title.section-label {
    font-size: 22px;
  }

  .link-building-faq__list {
    gap: 20px;
  }

  .link-building-faq__toggle {
    display: block;
  }

  .link-building-faq__question {
    padding: 14px 16px;
    padding-right: 12px;
    font-size: 16px;
  }

  .link-building-faq__item:not(:has(.link-building-faq__answer[hidden]))
    .link-building-faq__question {
    border-bottom-right-radius: 0;
  }

  .link-building-faq__item:has(.link-building-faq__answer[hidden])
    .link-building-faq__question {
    border-bottom-right-radius: 25px;
  }

  .link-building-faq__answer {
    padding: 16px;
    font-size: 14px;
  }

  .link-building-faq__label {
    font-size: 18px;
  }

  /* コンセプトセクション */
  .section--concept {
    padding: 0 20px;
  }

  .concept {
    grid-template-columns: 1fr;
    height: fit-content;
    bottom: 110px;
  }

  .concept-content {
    margin: 0;
    padding: 20px 20px 40px 20px;
  }

  .concept picture {
    order: -1;
  }

  .concept__image {
    height: 180px;
  }

  .concept-label {
    font-size: 28px;
    line-height: 1;
    height: 45px;
  }

  .concept-title {
    font-size: 26px;
    margin: 10px 0;
  }

  .concept-lead {
    font-size: 16px;
  }

  .label-sub {
    font-size: 12px;
    font-weight: bold;
  }

  /* サービスセクション */
  .service-card {
    align-items: center;
  }

  .service-grid {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .service-card__icon {
    height: 116px;
    width: 184px;
    padding: 30px 60px;
  }

  .service-card__icon-image {
    min-height: 60px;
    min-width: 60px;
    width: fit-content;
    height: fit-content;
  }

  .service-card__content {
    margin: -60px 0 0 0;
    padding-top: 80px;
    width: 100%;
  }

  .card-link {
    font-size: 16px;
    font-weight: bold;
  }

  .service-card__coming-soon {
    font-size: 16px;
    font-weight: bold;
  }

  .works .card-link {
    padding-right: 20px;
  }

  .works .card-link__icon {
    width: 36px;
    height: 36px;
  }

  .works .card-link__icon::after {
    width: 10px;
    height: 10px;
  }

  .cta-button {
    width: 100%;
  }

  /* フッター */
  .section--cta-banner {
    padding: 50px 0;
    background-image: url(../images/footer-sp-bg.svg);
  }

  .cta-banner {
    align-items: flex-start;
  }

  .cta-banner__content {
    padding: 0 30px;
  }

  .cta-banner__title {
    text-align: center;
    font-size: 26px;
  }

  .cta-banner__label {
    text-align: center;
    line-height: 1.6;
    font-size: 16px;
  }

  .cta-banner__separator {
    display: none;
  }

  .cta-banner__break {
    display: block;
  }

  br.syvix-break-pc {
    display: none;
  }

  br.syvix-break-sp,
  br.sp-only {
    display: block;
  }

  .cta-banner__cta .cta-banner__btn,
  .cta-banner__badge-container .btn--hero {
    width: 300px;
    height: 60px;
    font-size: 14px;
  }

  .footer__content {
    grid-template-columns: 1fr;
    gap: 40px;
    height: auto;
  }

  .footer__right {
    flex-wrap: nowrap;
    height: auto;
    max-height: none;
    row-gap: 20px;
  }

  .footer__right-item {
    border: none;
    padding: 0;
    text-align: center;
  }

  .footer__copyright-text {
    text-align: center;
  }

  .footer__logo {
    margin: auto;
  }

  .footer__link {
    line-height: 2.1;
  }

  /* コラムセクション */
  .column-label {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    align-items: center;
    height: fit-content;
    line-height: 1;
  }

  .column-label .label-separator {
    order: -1;
  }

  .column .section-heading {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 30px;
    margin: auto;
  }

  .section--column .shell.column {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "heading"
      "grid"
      "viewall";
    gap: 30px;
  }

  .section--column .shell.column .column__view-all {
    justify-content: flex-end;
    justify-self: end;
    width: 100%;
    margin: 0;
    padding: 0 20px 10px;
  }

  .section--column .shell.column .column__view-all .card-link__icon {
    width: 36px;
    height: 36px;
  }

  .section--column .shell.column .column__view-all .card-link__icon::after {
    width: 10px;
    height: 10px;
  }

  .column-grid {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .column-card__media {
    width: 100px;
    height: 100px;
  }

  .column-card__content {
    padding: 15px 10px 15px 10px;
    margin-left: 0;
  }
}

/* ============================================
   Column archive / single
   ============================================ */
.syvix-column-page {
  padding: 40px 0 80px;
  background-color: #ffffff;
}

.column-archive {
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.column-single {
  max-width: 1000px;
  margin: 0 auto;
}

.column-archive__header {
  margin-bottom: 40px;
  text-align: center;
}

.column-archive__breadcrumb,
.column-single__breadcrumb {
  max-width: 100%;
  min-width: 0;
}

.column-archive__breadcrumb {
  margin-bottom: 24px;
  min-width: 0;
}

.column-archive__breadcrumb-list,
.column-single__breadcrumb-list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: max-content;
  max-width: none;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-font);
}

.column-archive__breadcrumb .breadcrumb__item,
.column-single__breadcrumb .breadcrumb__item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  white-space: nowrap;
}

.column-archive__heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
}

.column-archive__slash.label-separator {
  margin-bottom: 4px;
}

.column-archive__label {
  margin: 0;
  line-height: 1.2;
}

.column-archive__label-sub {
  margin: 0;
}

.column-archive__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

.column-archive__main {
  min-width: 0;
}

.column-sidebar {
  align-self: stretch;
  display: flex;
  flex-direction: column;
}

.column-archive__category-heading {
  margin: 0 0 24px;
  padding: 16px 24px;
  background-color: var(--color-main);
  color: var(--color-white);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

.column-single__meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 0;
}

.column-single__dates {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}

.column-single__date {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-font);
}

.column-single__date-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-main);
}

.column-single__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.column-single__tags-item {
  margin: 0;
}

.column-single__tag {
  display: inline-block;
  padding: 4px 12px;
  color: var(--color-dark);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: bold;
  line-height: 1.4;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.column-single__tag:hover,
.column-single__tag:focus-visible {
  opacity: 0.85;
}

.column-archive__pagination {
  margin-top: 40px;
}

.column-archive__pagination .nav-links {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.column-archive__pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  min-width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-main);
  border-radius: 50%;
  color: var(--color-main);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
}

.column-archive__pagination .page-numbers.current {
  background-color: var(--color-main);
  color: var(--color-white);
}

.column-archive__pagination .page-numbers.next {
  color: #ffffff;
  background-color: #5e5e5e;
  border-color: #5e5e5e;
}

.column-archive__pagination .page-numbers.page-numbers--first {
  width: auto;
  min-width: auto;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 13px;
}

.column-archive__pagination .page-numbers.dots {
  width: auto;
  min-width: auto;
  height: auto;
  padding: 0 4px;
  border: none;
  border-radius: 0;
  color: var(--color-main);
  font-size: 0;
  pointer-events: none;
}

.column-archive__pagination .page-numbers.dots::before {
  content: "・・・";
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.column-archive__empty,
.column-sidebar__empty {
  margin: 0;
  font-size: 14px;
  color: var(--color-font);
}

.column-sidebar__block + .column-sidebar__block {
  margin-top: 32px;
  width: 100%;
}

.column-sidebar__title {
  margin: 0 0 16px;
  width: 100%;
  text-align: left;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-main);
}

.column-sidebar__title--lined {
  display: inline-block;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-main);
}

.column-sidebar__title--visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.column-sidebar__categories,
.column-sidebar__posts {
  margin: 0;
  padding: 0;
  list-style: none;
}

.column-sidebar__categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.column-sidebar__categories-item {
  margin: 0;
}

.column-sidebar__badge {
  text-decoration: none;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.column-sidebar__badge:hover,
.column-sidebar__badge:focus-visible {
  background-color: var(--color-main);
  color: var(--color-white);
}

.column-sidebar__badge.is-active {
  background-color: var(--color-main);
  color: var(--color-white);
}

.column-sidebar__block--latest .column-sidebar__posts {
  margin-bottom: 20px;
}

.column-sidebar__post-item + .column-sidebar__post-item {
  border-top: 1px solid var(--color-muted);
}

.column-sidebar__post-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  text-decoration: none;
  color: var(--color-main);
  border-bottom: 1px solid var(--color-main);
  transition: color 0.2s ease;
}

.column-sidebar__post-link:hover .column-sidebar__post-title,
.column-sidebar__post-link:focus-visible .column-sidebar__post-title {
  color: var(--color-main);
}

.column-sidebar__post-media {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--color-bg);
  border-top-left-radius: 12px;
  border-bottom-right-radius: 12px;
}

.column-sidebar__post-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.column-sidebar__post-image-placeholder {
  display: block;
  width: 100%;
  height: 100%;
  background-color: #ebebeb;
}

.column-sidebar__post-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.column-sidebar__latest-footer {
  display: flex;
  justify-content: flex-end;
  margin: 0;
  padding-top: 4px;
  width: 100%;
}

.column-sidebar__post-title {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-main);
}

.column-sidebar__post-date {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  color: #999;
}

.column-sidebar__post-date img {
  flex-shrink: 0;
  display: block;
}

.column-sidebar__block--banner {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 360px;
}

.column-sidebar__banner-track {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  box-sizing: border-box;
  width: 100%;
  min-height: 360px;
}

.column-sidebar__banner {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.column-sidebar__banner-placeholder {
  width: 100%;
  pointer-events: none;
  visibility: hidden;
}

.column-sidebar__banner.is-following,
.column-sidebar__banner.is-pinned-bottom {
  z-index: 100;
}

.column-sidebar__banner.is-pinned-bottom {
  margin-top: auto;
}

.column-sidebar__banner-link {
  display: block;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.column-sidebar__banner-link:hover,
.column-sidebar__banner-link:focus-visible {
  opacity: 0.9;
}

.column-sidebar__banner img {
  display: block;
  width: 100%;
  height: auto;
}

.column-single__article {
  min-width: 0;
}

.column-single__header {
  margin-bottom: 24px;
  margin-top: 4rem;
  width: 100%;
}

.column-single__title {
  margin: 0;
  font-size: 28px;
  line-height: 1.5;
  color: var(--color-dark);
}

.column-single__thumbnail {
  margin: 0 0 32px;
}

.column-single__thumbnail-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.column-single__content {
  min-width: 0;
  max-width: 100%;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-font);
  overflow-wrap: anywhere;
}

.column-single__content > *:first-child {
  margin-top: 0;
}

.column-single__footer {
  margin-top: 48px;
  padding-top: 24px;
}

.column-single__sns {
  display: flex;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.column-single__sns-item {
  margin: 0;
  padding: 0;
}

.column-single__sns-link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.column-single__sns-link img {
  display: block;
  width: 35px;
  height: 35px;
}

.column-single__sns-link:hover,
.column-single__sns-link:focus-visible {
  opacity: 0.75;
}

.column-single__back {
  margin: 0;
}

a.footer__right-label {
  text-decoration: none;
  color: var(--color-main);
  position: relative;
  display: inline-block;
  transition: color 0.2s ease;
}

a.footer__right-label::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-main);
  transition: width 0.3s ease;
}

a.footer__right-label:hover,
a.footer__right-label:focus-visible {
  color: var(--color-main);
}

a.footer__right-label:hover::after,
a.footer__right-label:focus-visible::after {
  width: 100%;
}

@media (max-width: 1080px) {
  .syvix-column-page {
    padding: 24px 0 56px;
  }

  .column-archive {
    max-width: 100%;
    margin: 0 auto;
    width: 100%;
  }

  .column-archive,
  .column-single {
    padding: 0 15px;
  }

  .column-archive__header {
    margin-bottom: 28px;
  }

  .column-archive__breadcrumb,
  .column-single__breadcrumb {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .column-archive__breadcrumb {
    text-align: left;
  }

  .column-archive__breadcrumb-list {
    justify-content: flex-start;
  }

  .column-single__breadcrumb-list {
    justify-content: flex-start;
  }

  .column-archive__label {
    font-size: 26px;
  }

  .column-archive__category-heading {
    margin-bottom: 20px;
    padding: 14px 16px;
    font-size: 18px;
  }

  .column-archive__layout {
    display: flex;
    flex-direction: column;
    gap: 32px;
  }

  .column-sidebar {
    display: contents;
  }

  .column-archive__main,
  .column-single__article {
    order: 1;
    width: 100%;
  }

  .column-single__sns {
    justify-content: center;
  }

  .column-sidebar__block--categories {
    order: 2;
  }

  .column-sidebar__block--latest {
    order: 3;
  }

  .column-sidebar__block--banner {
    order: 4;
    display: flex;
    justify-content: center;
    flex: none;
    min-height: 0;
    width: 100%;
  }

  .column-sidebar__banner-track {
    min-height: 0;
    height: auto;
    padding-top: 0;
  }

  .column-sidebar__banner {
    position: static;
  }

  .column-sidebar__banner.is-pinned-bottom {
    margin-top: 0;
  }

  .syvix-column-page--single .column-sidebar__block--categories {
    order: 3;
  }

  .syvix-column-page--single .column-sidebar__block--latest {
    order: 4;
  }

  .syvix-column-page--single .column-sidebar__block--banner {
    order: 5;
  }

  .column-sidebar__categories {
    gap: 10px;
  }

  .column-sidebar__badge {
    font-size: 12px;
  }

  .column-archive__pagination {
    margin-top: 32px;
  }

  .column-archive__pagination .nav-links {
    flex-wrap: wrap;
    gap: 8px;
  }

  .column-archive__pagination .page-numbers {
    width: 36px;
    min-width: 36px;
    height: 36px;
    font-size: 13px;
  }
}

@media (max-width: 640px) {
  .column-archive__category-heading {
    font-size: 16px;
  }
}