@font-face {
  font-family: 'Utsukushi';
  src: url('font/utsukushi.woff') format('woff'),
    url('font/utsukushi.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'ipaexm';
  src: url('font/ipaexm.woff') format('woff');
}

:root {
  --color-bg-sidebar: #c7e0e6;
  --color-bg-content: #ffffff;
  --color-text-main: #1a1a1a;
  --color-text-menu: #333333;
  --color-accent-line: #528694;
  --font-family-base: 'Utsukushi', "ipaexm","Noto Serif JP", "BIZ UDPMincho", serif;
  --font-family-en: "Georgia", "Times New Roman", serif; /* 英語表記用セリフ体フォント（後からカスタマイズ可能） */

  --pc-width: 1800px;
  --pc-height: 1000px;
  --sp-width: 420px;
  --sp-height: 600px;
}

/* スタイルの初期化（リセット） */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-content);
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.7;
}

/* 全体コンテナ */
.container {
  display: flex;
  width: 100%;
  max-width: var(--pc-width);
  margin: 0 auto;
  position: relative;
  min-height: 100vh;
}

/* サイドバー（PC表示時は左側に固定） */
.sidebar {
  width: 33.333%;
  background-color: var(--color-bg-sidebar);
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-900px);
  /* 1800pxの幅の半分 */
  height: 100vh;
  padding: 10px clamp(15px, 2vw, 30px);
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* ビューポートが1800px未満の場合、サイドバーを画面左端に固定 */
@media (max-width: 1800px) {
  .sidebar {
    left: 0;
    transform: none;
  }
}

.sidebar-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0 10px;
}

.sidebar-top img {
  height: clamp(14px, 1.358vw, 20.44px);
  width: auto;
  display: block;
}

.sidebar-inner {
  flex-grow: 1;
  display: flex;
  flex-direction: row;
  /* 左側にブランディングロゴ、右側に縦ナビゲーションを配置 */
  justify-content: space-between;
  align-items: stretch;
  width: 100%;
  margin-top: 30px;
}

/* ブランディングエリア（左側） */
.sidebar-branding {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  width: 50%;
}

.name-area {
  display: flex;
  flex-direction: row-reverse;
  /* 右側に肩書き、左側に名前 */
  align-items: flex-start;
  margin-top: clamp(20px, 8vh, 80px);
  /* トップヘッダーからの余白 */
}

/* ナビゲーションメニューエリア（右側） */
.sidebar-menu {
  display: flex;
  flex-direction: row-reverse;
  /* メニュー項目を右から左へ並べる */
  align-items: flex-start;
  gap: clamp(12px, 1.8vw, 28px);
  height: auto;
  margin-top: 45vh;
  margin-bottom: clamp(40px, 15vh, 220px);
  /* 下部〜中央寄りに配置 */
}

.vertical-text {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  -ms-writing-mode: tb-rl;
  white-space: nowrap;
  letter-spacing: 0.75em;
  color: var(--color-text-menu);
}
.vertical-text-menu {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  -ms-writing-mode: tb-rl;
  white-space: nowrap;
  letter-spacing: 0.1em;
  color: var(--color-text-menu);
}

.vertical-text,.vertical-text-menu a {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  display: block;
}

.vertical-text.text-main {
  font-size: clamp(1.8rem, 2.8vw, 3.8rem);
  font-weight: 100;
}

.vertical-text.text-sub {
  font-size: clamp(0.9rem, 1.1vw, 1.15rem);
  letter-spacing: 0.28em;
  color: var(--color-text-menu);
}

.vertical-text.text-link {
  font-size: clamp(0.95rem, 1.1vw);
  cursor: pointer;
  position: relative;
  padding-top: 0;
}

.nav-dot {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 10px;
}

.nav-dot::before {
  content: "　";
  color: #ffffff;
  font-size: 10px;
  font-family: var(--font-family-base);
}

.vertical-text-menu.text-link.active .nav-dot::before {
  content: "●";
}

/* 左下のInstagram・英語表記ブランディング */
.english-branding {
  position: absolute;
  bottom: 40px;
  left: clamp(15px, 2vw, 30px);
  width: calc(100% - (clamp(15px, 2vw, 30px) * 2));
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.instagram-link {
  display: inline-block;
  margin-bottom: 20px;
  transition: opacity 0.3s;
}

.instagram-link:hover {
  opacity: 0.7;
}

.instagram-icon {
  width: 100%;
  max-width: 29px;
  height: auto;
  display: block;
}

.eng-text-wrapper {
  display: block;
  width: 100%;
}

.eng-logo-img {
  width: 100%;
  max-width: 302.98px;
  height: auto;
  display: block;
}



.sp-hero-image-wrapper {
  display: none;
  /* SP表示時のみ表示 */
}

/* 右側のスクロールコンテンツエリア */
.content {
  width: 66.666%;
  margin-left: 33.333%;
  /* 固定サイドバーと重ならないように右側へ寄せる */
  padding: 0 12% 100px 12%;
}

.first-view-hero {
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  width: 100%;
}

.hero-line-container {
  width: 100%;
  position: relative;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.horizontal-accent-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-accent-line);
  z-index: 1;
}

.square-image {
  width: 100%;
  max-width: 800px;
  height: 80vh;
  z-index: 2;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #666;
}

.main-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 共通画像ボックスのスタイル */
.basic-image-box {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.9rem;
  text-align: center;
}

.content-image-wrapper {
  margin-top: 30px;
  width: 100%;
}

.standard-image-box {
  width: 100%;
  height: 400px;
}

.landscape-image-box {
  width: 100%;
  height: 350px;
}

.portrait-main {
  width: 100%;
  height: 500px;
}

.sp-main-image {
  object-fit: cover;
}

/* 各コンテンツセクション共通 */
.content-section {
  padding: 120px 0;
  max-width: 800px;
  margin: 0;
}

/* ご挨拶セクションの互い違いレイアウト */
.greeting-section {
  display: block;
}

.greeting-text-wrapper {
  width: 58%;
  margin-left: auto;
  margin-top: 30px; /* タイトル線からの上部余白 */
}

.greeting-text-wrapper p {
  margin-bottom: 60px;
  font-size: 0.95rem;
  line-height: 2.3;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
}

.greeting-image-wrapper {
  width: 58%;
  margin-right: auto;
  margin-top: 80px; /* 段落テキストからの余白 */
}

.pottery-image {
  width: 100%;
  height: auto;
  display: block;
}

/* 自己紹介セクションの互い違いレイアウト（ご挨拶とは反転） */
.profile-section {
  display: block;
}

.profile-text-wrapper {
  width: 58%;
  margin-right: auto;
  margin-left: 0;
  margin-top: 80px;
}

.profile-text-wrapper p {
  margin-bottom: 60px;
  font-size: 0.95rem;
  line-height: 2.3;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
}

.profile-image-wrapper {
  width: 58%;
  margin-left: auto;
  margin-right: 0;
  margin-top: 80px;
}

.profile-image {
  width: 100%;
  height: auto;
  display: block;
}

/* 仕事内容セクションのレイアウト（項目の下に内容を配置） */
.work-section {
  display: block;
}

.work-content-wrapper {
  width: 65%;
  margin-left: 0;
  margin-right: auto;
  margin-top: 60px;
}

.work-block {
  margin-bottom: 60px;
}

.work-category-title {
  font-size: 1.5rem;
  font-weight: normal;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
}

.work-category-title::before {
  content: url(./images/hexagon.svg);
  font-size: 0.55em;
  margin-right: 6px;
  color: var(--color-text-main);
  width: 10px;
  height: 12px;
  position: relative;
  top: -2px;
}

.work-item {
  margin-bottom: 32px;
}

.work-item-title {
  font-size: 1.2rem;
  font-weight: normal;
  letter-spacing: 0.08em;
  color: var(--color-text-main);
  margin-bottom: 12px;
  padding-left: 10px;
}

.work-item-note {
  font-size: 0.85rem;
  color: #666666;
  margin-left: 8px;
  letter-spacing: 0.05em;
  font-weight: normal;
}

.work-item-text {
  font-size: 0.95rem;
  line-height: 1.95;
  color: var(--color-text-main);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-left: 20px;
}

.m-n1{
  padding-left: 20px;
}

.work-image-wrapper {
  width: 65%;
  margin-left: 0;
  margin-right: auto;
  margin-top: 60px;
}

.work-image {
  width: 100%;
  aspect-ratio: 1.2 / 1;
  object-fit: cover;
  display: block;
}

/* 実績セクションのレイアウト（テキスト右） */
.achievements-section {
  display: block;
}

.achievements-content-wrapper {
  width: 58%;
  margin-left: auto;
  margin-top: 80px;
}

.achievement-group {
  margin-bottom: 60px;
}

.achievement-category {
  margin-bottom: 24px;
}

.category-vertical-bar {
  display: none;
}

.achievement-category-title {
  font-size: 1.45rem;
  font-weight: normal;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
}

.achievement-list {
  display: flex;
  flex-direction: column;
}

.achievement-item {
  padding: 18px 0;
  border-bottom: 1px dashed #b2b2b2;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.achievement-item.no-border {
  border-bottom: none;
}

.achievement-date {
  font-size: 0.85rem;
  color: #666666;
  letter-spacing: 0.05em;
}

.achievement-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-main);
  letter-spacing: 0.05em;
}

/* 著書・執筆セクション内の連載・掲載ブロック（テキスト左） */
.articles-content-wrapper {
  width: 62.5%;
  margin-right: auto;
  margin-left: 0;
  margin-top: 100px;
}

.article-group {
  margin-bottom: 60px;
}

.article-category {
  margin-bottom: 24px;
}

.article-category .category-vertical-bar {
  display: none;
}

.article-category-title {
  font-size: 1.55rem;
  font-weight: normal;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
}

.article-company-block {
  margin-bottom: 30px;
}

.article-company-name {
  font-size: 1.25rem;
  font-weight: normal;
  letter-spacing: 0.08em;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.article-item-title {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--color-text-main);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 80px;
  position: relative;
  letter-spacing: 0.1em;
  color: var(--color-text-menu);
  padding-bottom: 50px;
}

/* セクションタイトルの下線 */
.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 22px;
  width: 65%;
  height: 1px;
  background-color: var(--color-text-menu);
}

/* セクションタイトル下線の英語サブ表記 */
.section-title::before {
  content: attr(data-en);
  position: absolute;
  left: 0;
  bottom: -22px;
  font-size: 1.15rem;
  letter-spacing: 0.3em;
  color: var(--color-text-main);
  font-family: var(--font-family-en);
  text-transform: lowercase;
}

.lead-text {
  font-size: 1.25rem;
  margin-bottom: 24px;
  font-weight: 500;
}

.section-body p {
  margin-bottom: 50px;
  font-size: 1rem;
}

/* お問い合わせフォーム */
.contact-form {
  margin-top: 40px;
}

.form-group {
  margin-bottom: 120px;
}

.form-group label {
  display: block;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--color-text-main);
  font-size: 0.95rem;
}

.form-group label .required-mark {
  font-size: 0.95rem;
  color: var(--color-text-main);
  margin-left: 4px;
  font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 32px 20px;
  border: 0.14rem solid #b3b3b3;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text-main);
  background-color: #ffffff;
  transition: border-color 0.3s;
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 20px center;
  background-size: 16px;
  padding-right: 45px;
}

.form-group textarea {
  border-radius: 20px;
  padding: 20px;
  resize: vertical;
  height: 400px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #666666;
  background-color: #ffffff;
}

.submit-btn {
  display: block;
  margin: 40px auto 0 auto;
  background-color: #cccccc;
  /* light gray from image */
  color: #ffffff;
  padding: 14px 70px;
  border: none;
  border-radius: 0;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s;
  letter-spacing: 0.2em;
  font-weight: 500;
}

.submit-btn:hover {
  background-color: #b5b5b5;
}

/* フッター */
.footer {
  padding: 50px 0;
  text-align: center;
  font-size: 0.85rem;
  color: #777;
  max-width: 800px;
}

.hamburger-wrapper {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background-color: var(--color-bg-sidebar);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.hamburger-wrapper.is-scroll-visible,
.hamburger-wrapper.is-menu-open {
  opacity: 1;
  visibility: visible;
  display: flex;
}

.hamburger-wrapper.is-menu-open {
  z-index: 1100;
}

.hamburger-logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.sp-header-logo-img {
  height: 28px;
  width: auto;
  display: block;
}

.hamburger {
  display: flex;
  width: 44px;
  height: 44px;
  background-color: transparent;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.sp-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background-color: var(--color-bg-sidebar);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  box-sizing: border-box;
  overflow-y: auto;
}

.sp-nav.is-active {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.sp-nav-inner {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  padding-top: 60px; /* space for top fixed header */
  box-sizing: border-box;
}

.sp-nav-body {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: clamp(28px, 8vw, 56px);
  flex-grow: 1;
  padding: 20px 24px;
}

.sp-nav-catch {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  font-size: clamp(1.2rem, 4.5vw, 1.45rem);
  line-height: 2.0;
  letter-spacing: 0.12em;
  color: #1a1a1a;
  white-space: nowrap;
  position: relative;
  top: 40px;
  left: -20px;  
}

.sp-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: clamp(16px, 2.8vh, 26px);
  position: relative;
  top: -100px;  
}

.sp-nav-menu li a {
  font-size: clamp(1.05rem, 4.2vw, 1.25rem);
  letter-spacing: 0.2em;
  color: #333333;
  font-weight: 500;
  display: inline-block;
  transition: opacity 0.2s;
}

.sp-nav-menu li a:hover {
  opacity: 0.7;
}

.sp-nav-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px 30px;
  width: 100%;
}

.sp-nav-bottom img {
  height: 16px;
  width: auto;
}

/* --- 著書セクション --- */
.books-container {
  display: flex;
  justify-content: center;
  gap: 80px;
  margin-top: 120px;
  width: 100%;
}

.book-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 0 1 280px;
}

.book-image-wrapper {
  background-color: #ffffff;
  padding: 10px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  justify-content: center;
  align-items: center;
}

.book-image-wrapper:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
}

.book-image {
  width: 100%;
  height: auto;
  display: block;
}

.book-title {
  margin: 20px 0 18px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-main);
  font-family: var(--font-family-base);
  min-height: 3.2em; /* 2行分の高さを確保してボタン位置を揃える */
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-button {
  display: inline-block;
  background-color: #333333;
  color: #ffffff;
  padding: 10px 45px;
  border-radius: 25px;
  font-size: 0.9rem;
  font-family: sans-serif;
  letter-spacing: 0.05em;
  transition: background-color 0.3s, opacity 0.3s;
}

.book-button:hover {
  background-color: #4d4d4d;
  opacity: 1;
}

/* --- タブレット用レイアウト調整（PC版ベース） --- */
@media (max-width: 1280px) and (min-width: 768px) {
  .content {
    padding: 0 8% 100px 8%;
  }

  .sidebar-top img {
    height: 15px;
    width: auto;
  }

  .sidebar-menu {
    position: absolute;
    left: clamp(2vw,4vw,15vw);    
    gap: clamp(10px, 1.2vw, 16px);
  }

  .vertical-text.text-link {
    font-size: 0.9rem;
  }

  .eng-logo-img {
    max-width: 160px;
  }

  .greeting-text-wrapper,
  .profile-text-wrapper,
  .work-content-wrapper,
  .achievements-content-wrapper,
  .articles-content-wrapper {
    width: 75%;
  }

  .greeting-image-wrapper,
  .profile-image-wrapper,
  .work-image-wrapper {
    width: 75%;
  }
}

/* --- SP用レスポンシブスタイル --- */
@media (max-width: 767px) {
  .container {
    flex-direction: column;
    max-width: var(--sp-width);
  }

  .sidebar {
    position: relative;
    left: auto;
    transform: none;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: stretch;
    writing-mode: horizontal-tb;
    -webkit-writing-mode: horizontal-tb;
  }

  .sidebar-inner {
    width: 100%;
    height: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: stretch;
    margin-top: 30px;
  }

  .sidebar-branding {
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
  }

  .name-area {
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    gap: 12px;
    margin-top: 40px;
  }

  .vertical-text.text-main {
    font-size: 2.1rem;
    margin-left: 0;
    font-weight: 100;
  }

  .vertical-text.text-sub {
    font-size: 1.05rem;
    letter-spacing: 0.1em;
    margin-left: 0;
  }

  .sidebar-menu {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    height: auto;
    margin-top: 100px;
    margin-bottom: auto;
    position: absolute;
    right: 15vw;
  }

  .sidebar-menu .vertical-text-menu {
    writing-mode: horizontal-tb;
    -webkit-writing-mode: horizontal-tb;
    white-space: nowrap;
    letter-spacing: 0.1em;
  }

  .sidebar-menu .vertical-text-menu a {
    writing-mode: horizontal-tb;
    -webkit-writing-mode: horizontal-tb;
    display: inline-block;
  }

  .sidebar-menu .nav-dot {
    display: none;
  }

  .vertical-text-menu.text-link {
    font-size: 1rem;
    padding-top: 0;
  }

  .instagram-link {
    display: none;
  }

  .sidebar-top img {
    height: 17.44px;
    width: auto;
  }

  .instagram-link {
    display: none;
  }

  .english-branding {
    position: static;
    width: auto;
    margin-top: auto;
    padding-bottom: 10px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .eng-text-wrapper {
    display: block;
    width: 100%;
  }

  .eng-logo-img {
    width: 100%;
    max-width: 205.02px;
  }

  .sp-hero-image-wrapper {
    display: block;
    width: 100%;
  }

  .sp-hero-image-wrapper .portrait-main {
    height: 100%;
  }

  .sp-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .portrait-image-box {
    height: 100%;
    padding: 10px;
    font-size: 0.8rem;
  }

  /* メインコンテンツエリア（ヒーロー画像の下に配置） */
  .content {
    width: 100%;
    margin-left: 0;
    padding: 0 20px 50px 20px;
  }

  /* SP版ではファーストビューのメインビジュアルは非表示（サイドバー内のSP用イメージを使うため） */
  .first-view-hero {
    display: none;
  }

  .content-section {
    padding: 80px 0;
    margin: 0;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 50px;
    padding-bottom: 42px;
  }

  .section-title::after {
    bottom: 22px;
  }

  .section-title::before {
    bottom: -22px;
    font-size: 0.95rem;
  }

  .standard-image-box,
  .landscape-image-box {
    height: 250px;
  }

  /* SP用ご挨拶セクションのレイアウト調整 */
  .greeting-text-wrapper {
    width: 100%;
    margin-left: 10px;
    margin-top: 20px;
  }

  .greeting-text-wrapper p {
    margin-bottom: 50px;
    font-size: 0.95rem;
    line-height: 2.3;
    letter-spacing: 0.1em;
  }

  .greeting-image-wrapper {
    width: 75%;
    margin-right: auto;
    margin-left: -20px;
    margin-top: 30px;
  }

  /* SP用自己紹介セクションのレイアウト調整 */
  .profile-text-wrapper {
    width: 100%;
    margin-right: 15px;
    margin-top: 20px;
    margin-bottom: 100px;
    padding-left: 15px;
  }

  .profile-text-wrapper p {
    margin-bottom: 50px;
    font-size: 0.95rem;
    line-height: 2.3;
    letter-spacing: 0.1em;
  }

  .profile-image-wrapper {
    width: 75%;
    margin-left: auto;
    margin-right: -20px;
    margin-top: 30px;
  }

  /* SP用仕事内容セクションのレイアウト調整 */
  .work-content-wrapper {
    width: 100%;
    margin-left: 0;
    margin-top: 20px;
  }

  .work-block {
    margin-bottom: 40px;
  }

  .work-category-title {
    font-size: 1.25rem;
    margin-bottom: 18px;
  }

  .work-item {
    margin-bottom: 24px;
  }

  .work-item-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
  }

  .work-item-note {
    display: block;
    margin-left: 0;
    margin-top: 4px;
    font-size: 0.85rem;
    padding-left: 10px;
  }

  .work-item-text {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 8px;
    padding-left: 10px;
  }

  .work-image-wrapper {
    width: 100%;
    margin-right: 0;
    margin-top: 50px;
  }

  /* SP用実績セクション - 縦書き見出しレイアウト (ルール4・5対応) */
  .achievements-content-wrapper {
    width: 100%;
    margin-left: 0;
    margin-top: 20px;
  }

  .achievement-group {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 36px;
  }

  .achievement-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 24px;
    padding-top: 4px;
    margin-bottom: 0;
  }

  .category-vertical-bar {
    display: block;
    width: 1px;
    height: 18px;
    background-color: var(--color-text-main);
    margin-bottom: 8px;
    position: relative;
    left: -2px;    
  }

  .achievement-category-title {
    writing-mode: vertical-rl;
    -webkit-writing-mode: vertical-rl;
    font-size: 1.15rem;
    letter-spacing: 0.15em;
    white-space: nowrap;
    line-height: 1.2;
  }

  .achievement-list {
    flex-grow: 1;
  }

  .achievement-item,
  .achievement-item.no-border {
    padding: 12px 0;
    border-bottom: 1px dashed #b2b2b2;
  }

  .achievement-date {
    font-size: 0.75rem;
  }

  .achievement-text {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  /* SP用著書セクションのレイアウト調整 */
  .books-container {
    flex-direction: column;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
  }

  .book-item {
    flex: 0 1 auto;
    width: 100%;
    max-width: 260px;
  }

  .book-title {
    margin: 15px 0 12px;
    min-height: auto;
    font-size: 0.9rem;
  }

  .book-button {
    padding: 8px 35px;
    font-size: 0.85rem;
  }

  /* SP用連載・掲載ブロック - 縦書き見出しレイアウト (ルール4・5対応) */
  .articles-content-wrapper {
    width: 100%;
    margin-right: 0;
    margin-top: 60px;
  }

  .article-group {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 36px;
  }

  .article-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 24px;
    padding-top: 4px;
    margin-bottom: 0;
  }

  .article-category .category-vertical-bar {
    display: block;
    width: 1px;
    height: 18px;
    background-color: var(--color-text-main);
    margin-bottom: 8px;
  }

  .article-category-title {
    writing-mode: vertical-rl;
    -webkit-writing-mode: vertical-rl;
    font-size: 1.15rem;
    letter-spacing: 0.15em;
    white-space: nowrap;
    line-height: 1.2;
  }

  .article-list {
    flex-grow: 1;
  }

  .article-company-block {
    margin-bottom: 20px;
  }

  .article-company-name {
    font-size: 1rem;
    margin-bottom: 6px;
  }

  .article-item-title {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 6px;
  }

  .contact-desc br {
    display: none;
  }
  .form-group {
    margin-bottom: 50px;
  }
  .form-group textarea{
    height: 180px;
  }
  .m-n1{
    padding-left: 20px;
  }
}

/* 1800px以上の大画面で比率を維持したまま変動（可変）させる */
@media (min-width: 1800px) {
  .container {
    max-width: none;
  }
  .sidebar {
    width: 33.333%;
    left: 0;
    transform: none;
  }
  .content {
    width: 66.666%;
    margin-left: 33.333%;
  }
}

h2.section-title {
    font-weight: normal;
}

.l_bk,.l_bk:hover{
  color: #1a1a1a;
  text-decoration: underline;
}
div > p{
  text-align: justify!important;
}