/* ========================================
   共通スタイル - TRUST Theme
   ======================================== */

/* Google Fonts */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap");

/* ========================================
   ローディングスクリーン
   ======================================== */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #f4f4f0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.5s ease;
  pointer-events: all;
}

.page-loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

.page-loader.hidden {
  display: none;
}

.loader-content {
  text-align: center;
  opacity: 0;
  transform: translateY(8px);
  animation: loaderFadeIn 0.6s ease forwards 0.1s;
}

.loader-logo {
  width: 180px;
  height: auto;
  object-fit: contain;
  margin-bottom: 48px;
}

.loader-tagline {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 24px;
  font-weight: 600;
  color: #244668;
  letter-spacing: 0.15em;
}

@keyframes loaderFadeIn {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* リセット・基本設定 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family:
    "Noto Sans JP",
    "Hiragino Kaku Gothic ProN",
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    sans-serif;
  background-color: #f4f4f0;
  color: #244668;
  line-height: 1.6;
  font-size: 16px;
}

a {
  text-decoration: none;
}

img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 記事コンテンツ内の画像は個別設定を優先 */
.news-content img,
.news-detail-article img {
  width: revert;
  height: revert;
  object-fit: revert;
}

/* コンテナ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 90px;
}

.content-wrapper {
  max-width: 1100px;
  margin: 0 auto;
}

/* ========================================
   ヘッダー
   ======================================== */
.site-header {
  margin: 0 16px;
  background-color: rgba(255, 255, 255, 0.47);
  position: fixed;
  width: calc(100% - 32px);
  max-width: calc(1280px - 32px);
  top: 16px;
  left: calc(50% - 16px);
  transform: translateX(-50%);
  border-radius: 10px;
  z-index: 1000;
  /* XD背景ぼかし設定の再現 */
  backdrop-filter: blur(19px);
  -webkit-backdrop-filter: blur(19px);
  /* ノイズ効果（47%）- 微細なテクスチャ */
  background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.02) 2px, rgba(255, 255, 255, 0.02) 4px);
  box-shadow: 0 4px 16px 0 rgba(0, 0, 0, 0.08);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px 16px 10px 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.header-logo img {
  display: block;
  width: 100px;
  height: auto;
}

.header-nav .nav-menu {
  display: flex;
  list-style: none;
  gap: 40px;
  align-items: stretch;
}

.header-nav .nav-menu li {
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.header-nav .nav-menu li a {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #4f4c4b;
  font-family: "Helvetica", sans-serif;
  font-weight: 700;
  font-size: 14px;
  transition: color 0.3s;
}

.header-nav .nav-menu li a:hover {
  color: #5eb6e2;
}

.header-nav .nav-menu li.contact-btn a {
  width: 160px;
  height: 40px;
  border-radius: 20px;
  background-color: #5eb6e2;
  border: 1px solid #5eb6e2;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.header-nav .nav-menu li.contact-btn a:hover {
  background-color: #ffffff;
  color: #5eb6e2;
}

/* ハンバーガーメニューボタン（デフォルトは非表示） */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: #4f4c4b;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ハンバーガーメニューが開いている時のアニメーション */
.hamburger-btn.active .hamburger-line:nth-child(1) {
  transform: translateY(10.5px) rotate(45deg);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
  transform: translateY(-10.5px) rotate(-45deg);
}

/* ========================================
   フッター
   ======================================== */
.site-footer {
  background-color: #f4f4f0;
}

/* フッター - お問い合わせセクション */
.footer-contact {
  position: relative;
  width: 100%;
  height: 322px;
  background-color: #000000;
  padding: 40px 0;
  overflow: hidden;
}

.footer-contact-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: auto;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.footer-contact-wrapper {
  position: relative;
  width: 100%;
  max-width: 834px;
  height: 242px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 58px 96px 0 72px;
  z-index: 1;
  /* XD背景ぼかし設定: ぼかし30 */
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
}

.footer-contact-heading .footer-contact-label {
  margin-top: 8px;
  margin-bottom: 5px;
  font-size: 14px;
  color: #ffffff;
}

.footer-contact-heading .footer-contact-title {
  font-family: "Helvetica", sans-serif;
  font-size: 40px;
  color: #ffffff;
  font-weight: normal;
}

.footer-contact-description {
  color: #ffffff;
  font-size: 14px;
}

.footer-contact-button {
  margin-top: 32px;
}

/* フッター - メインセクション */
.footer-main {
  background-color: #244668;
  padding: 111px 0 0;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 43px;
  display: flex;
  justify-content: space-between;
}

/* フッターロゴ */
.footer-logo-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo-main .logo-placeholder-footer {
  background-color: #ffffff;
  width: 150px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #333333;
}

.footer-logo-main img {
  width: 100px;
  height: auto;
}

.footer-brand-logos {
  display: flex;
  gap: 50px;
}

.brand-logo-item {
  display: flex;
  flex-direction: column;
  gap: 20px;
  color: #ffffff;
  font-size: 12px;
  line-height: 1;
}

.brand-logo-placeholder {
  width: 140px;
  height: 38px;
  border: 1px solid #707070;
  padding: 8px;
}

.brand-logo-image img {
  width: 140px;
  height: auto;
}

/* フッターナビゲーション */
.footer-nav-section {
  display: flex;
  gap: 30px;
}

.footer-nav-column-link {
  display: block;
  margin-top: 0;
  margin-bottom: 20px;
  font-family: "Helvetica", sans-serif;
  color: #ffffff;
  font-size: 14px;
  line-height: 1;
  transition: color 0.3s;
}

.footer-nav-column-link:hover {
  color: #5eb6e2;
}

.footer-nav-column-link--about {
  width: 150px;
}

.footer-nav-column-link--project {
  width: 116px;
}

.footer-nav-column-link--news {
  margin-left: -16px;
  width: 60px;
}

.footer-nav-column h3 {
  font-family: "Helvetica", sans-serif;
  font-size: 14px;
  color: #ffffff;
  font-weight: normal;
  margin-bottom: 20px;
}

.footer-nav-column ul {
  list-style: none;
}

.footer-nav-column ul li {
  margin-bottom: 8px;
}

.footer-nav-column ul li a {
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.footer-nav-column ul li a:hover {
  color: #5eb6e2;
}

.footer-nav-column.footer-contact-btn .btn {
  width: 160px;
  height: 40px;
}

/* フッター下部 */
.footer-bottom {
  border-top: 1px solid #1e344a;
  margin-top: 100px;
  padding: 30px 0;
}

.footer-bottom-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 43px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.footer-links {
  display: flex;
  gap: 10px;
  align-items: center;
}

.footer-links a {
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  line-height: 1;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #5eb6e2;
}

.footer-links span {
  color: #ffffff;
  line-height: 1;
}

.footer-copyright {
  margin-top: 20px;
  color: #ffffff;
  font-size: 12px;
  text-align: right;
}

/* ========================================
   ボタン
   ======================================== */
.btn {
  width: 200px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Helvetica", sans-serif;
  font-size: 14px;
  font-weight: 700;
  border-radius: 30px;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: #5eb6e2;
  border: 1px solid #5eb6e2;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #ffffff;
  color: #5eb6e2;
}

.btn-secondary {
  background-color: transparent;
  color: #ffffff;
  border: 1px solid #ffffff;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn-dark {
  background-color: #244668;
  color: #ffffff;
}

.btn-dark:hover {
  background-color: #1a3350;
}

/* ========================================
   ページタイトル
   ======================================== */
.page-title-section {
  padding: 0;
}

.page-title-section .subtitle {
  font-size: 14px;
  color: #244668;
  margin-bottom: 5px;
}

.page-title-section .title {
  font-family: "Helvetica", sans-serif;
  font-size: 40px;
  color: #244668;
  font-weight: normal;
  margin-bottom: 30px;
}

.page-title-section .title-line {
  width: 100%;
  height: 1px;
  background-color: #28425c;
}

/* ========================================
   コンテンツエリア
   ======================================== */
.content-area {
  padding: 40px 0;
}

/* セクションタイトル */
.section-title {
  font-size: 40px;
  font-family: "Helvetica", sans-serif;
  color: #244668;
  font-weight: normal;
  margin-bottom: 30px;
}

.section-subtitle {
  font-size: 14px;
  color: #244668;
  margin-bottom: 10px;
}

/* テキスト */
.text-large {
  font-size: 20px;
  line-height: 1.8;
}

.text-medium {
  font-size: 18px;
  line-height: 1.8;
}

.text-small {
  font-size: 14px;
  line-height: 1.8;
}

/* カラー */
.color-primary {
  color: #244668;
}

.color-accent {
  color: #5eb6e2;
}

.color-white {
  color: #ffffff;
}

.bg-primary {
  background-color: #244668;
}

.bg-accent {
  background-color: #5eb6e2;
}

.bg-light {
  background-color: #f4f4f0;
}

.bg-white {
  background-color: #ffffff;
}

/* ========================================
   ブランドセクション
   ======================================== */
.brand-section {
  background-color: #f4f4f0;
  padding: 100px 0;
}

.brand-section .container {
  display: flex;
  gap: 50px;
}

.brand-section .section-intro {
  flex: 1;
}

.brand-section-description {
  margin-top: 30px;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 14px;
  color: #244668;
  line-height: 1.8;
  letter-spacing: 0.05em;
}

.brand-list {
  margin-top: 8px;
  width: 650px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.brand-item {
  background-color: #244668;
  padding: 40px;
  display: flex;
  gap: 96px;
  justify-content: space-between;
  align-items: stretch;
  border-radius: 10px;
}

.brand-content {
  flex: 1;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.brand-logo p {
  width: 200px;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 10px;
  color: #fff;
  margin: 0;
}

.brand-logo img {
  width: 200px;
  height: auto;
  object-fit: cover;
}

.brand-name {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 20px;
  color: #ffffff;
  margin: 0 0 20px 0;
  font-weight: normal;
}

.brand-description {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 14px;
  color: #ffffff;
  line-height: 1.8;
  letter-spacing: 0.06em;
  margin-bottom: 30px;
}

.brand-item .btn {
  width: 200px;
}

/* ========================================
   ニュース一覧
   ======================================== */
.news-list {
  max-width: 1100px;
  margin: 0 auto;
}

.news-item {
  border-bottom: 1px solid #28425c;
  position: relative;
}
.news-item:first-child {
  border-top: 1px solid #28425c;
}

.news-item-link {
  padding: 40px 20px;
  color: #244668;
  display: flex;
  align-items: flex-start;
  gap: 60px;
  transition: all 0.3s;
}

.news-item-link:hover {
  background-color: #244668;
  color: #fff;
}

.news-item-meta {
  padding-top: 4px;
  display: flex;
  gap: 30px;
}

.news-date {
  font-size: 12px;
  color: #244668;
}
.news-item-link:hover .news-date {
  color: #fff;
}

.news-category {
  font-size: 12px;
  color: #244668;
}
.news-item-link:hover .news-category {
  color: #fff;
}

.news-item-title {
  flex: 1;
  font-size: 18px;
  font-weight: 300;
  color: #244668;
  line-height: 1.6;
}
.news-item-link:hover .news-item-title {
  color: #fff;
}

.news-item.featured .news-item-title {
  color: #ffffff;
}

.news-arrow {
  position: relative;
  font-size: 24px;
  color: #244668;
  line-height: 1;
}

.news-item-link:hover .news-arrow {
  color: #fff;
}

/* ========================================
   プロジェクト一覧
   ======================================== */

.project-link {
  text-decoration: none;
  display: block;
  transition: opacity 0.3s ease;
}

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

.project-image {
  width: 100%;
  height: 266px;
  margin-bottom: 20px;
  overflow: hidden;
  position: relative;
  background-color: transparent;
}

/* 背景ベール（画像の上に被さるカバー） */
.project-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #5eb6e2;
  z-index: 2;
  transform: translateX(-100%);
}

.project-image img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
}

/* Step1: 背景ベールが左から右にスライドイン → Step2: 右へ抜ける */
.project-image.slide-in::before {
  animation:
    revealBgIn 0.4s ease-out forwards,
    revealBgOut 0.4s ease-out 0.4s forwards;
}

.project-image.slide-in img {
  animation: revealImgShow 0.01s forwards 0.4s;
}

/* 順次表示のための遅延 */
.project-item:nth-child(1) .project-image.slide-in::before {
  animation-delay: 0s, 0.4s;
}
.project-item:nth-child(1) .project-image.slide-in img {
  animation-delay: 0.4s;
}

.project-item:nth-child(2) .project-image.slide-in::before {
  animation-delay: 0.1s, 0.5s;
}
.project-item:nth-child(2) .project-image.slide-in img {
  animation-delay: 0.5s;
}

.project-item:nth-child(3) .project-image.slide-in::before {
  animation-delay: 0.2s, 0.6s;
}
.project-item:nth-child(3) .project-image.slide-in img {
  animation-delay: 0.6s;
}

.project-item:nth-child(4) .project-image.slide-in::before {
  animation-delay: 0.3s, 0.7s;
}
.project-item:nth-child(4) .project-image.slide-in img {
  animation-delay: 0.7s;
}

.project-item:nth-child(5) .project-image.slide-in::before {
  animation-delay: 0.4s, 0.8s;
}
.project-item:nth-child(5) .project-image.slide-in img {
  animation-delay: 0.8s;
}

.project-item:nth-child(n + 6) .project-image.slide-in::before {
  animation-delay: 0.5s, 0.9s;
}
.project-item:nth-child(n + 6) .project-image.slide-in img {
  animation-delay: 0.9s;
}

/* 背景ベールが左から入る */
@keyframes revealBgIn {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(0);
  }
}

/* 背景ベールが右へ抜ける */
@keyframes revealBgOut {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(100%);
  }
}

/* 画像を表示 */
@keyframes revealImgShow {
  to {
    opacity: 1;
  }
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background-color: #9b9b9b;
}

.project-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 20px;
}

.project-category {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 12px;
  line-height: 1.66;
}

.project-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  font-weight: normal;
}

/* ========================================
   ユーティリティ
   ======================================== */
.mb-10 {
  margin-bottom: 10px;
}
.mb-20 {
  margin-bottom: 20px;
}
.mb-30 {
  margin-bottom: 30px;
}
.mb-40 {
  margin-bottom: 40px;
}
.mb-50 {
  margin-bottom: 50px;
}

.mt-10 {
  margin-top: 10px;
}
.mt-20 {
  margin-top: 20px;
}
.mt-30 {
  margin-top: 30px;
}
.mt-40 {
  margin-top: 40px;
}
.mt-50 {
  margin-top: 50px;
}

.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

/* ========================================
   スクロールトップボタン
   ======================================== */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: #5eb6e2;
  color: #ffffff;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background-color: #244668;
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-top:active {
  transform: translateY(-1px);
}

/* スムーススクロール全体に適用 */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px; /* ヘッダー80px + 余白20px */
}

/* ========================================
   セクションタイトルアニメーション
   ======================================== */
.section-title-en,
.page-title-section .title,
.section-title {
  overflow: hidden;
}

/* 1文字ずつのspan */
.section-title-en span,
.page-title-section .title span,
.section-title span {
  display: inline-block;
  transform: translateY(100%);
  opacity: 0;
  transition: none;
}

/* アニメーション実行 */
.section-title-en.is-inview span,
.page-title-section .title.is-inview span,
.section-title.is-inview span {
  animation: slideUpChar 0.6s ease-out forwards;
}

/* 順次表示のための遅延 */
.section-title-en.is-inview span:nth-child(1),
.page-title-section .title.is-inview span:nth-child(1),
.section-title.is-inview span:nth-child(1) {
  animation-delay: 0s;
}
.section-title-en.is-inview span:nth-child(2),
.page-title-section .title.is-inview span:nth-child(2),
.section-title.is-inview span:nth-child(2) {
  animation-delay: 0.05s;
}
.section-title-en.is-inview span:nth-child(3),
.page-title-section .title.is-inview span:nth-child(3),
.section-title.is-inview span:nth-child(3) {
  animation-delay: 0.1s;
}
.section-title-en.is-inview span:nth-child(4),
.page-title-section .title.is-inview span:nth-child(4),
.section-title.is-inview span:nth-child(4) {
  animation-delay: 0.15s;
}
.section-title-en.is-inview span:nth-child(5),
.page-title-section .title.is-inview span:nth-child(5),
.section-title.is-inview span:nth-child(5) {
  animation-delay: 0.2s;
}
.section-title-en.is-inview span:nth-child(6),
.page-title-section .title.is-inview span:nth-child(6),
.section-title.is-inview span:nth-child(6) {
  animation-delay: 0.25s;
}
.section-title-en.is-inview span:nth-child(7),
.page-title-section .title.is-inview span:nth-child(7),
.section-title.is-inview span:nth-child(7) {
  animation-delay: 0.3s;
}
.section-title-en.is-inview span:nth-child(8),
.page-title-section .title.is-inview span:nth-child(8),
.section-title.is-inview span:nth-child(8) {
  animation-delay: 0.35s;
}
.section-title-en.is-inview span:nth-child(9),
.page-title-section .title.is-inview span:nth-child(9),
.section-title.is-inview span:nth-child(9) {
  animation-delay: 0.4s;
}
.section-title-en.is-inview span:nth-child(10),
.page-title-section .title.is-inview span:nth-child(10),
.section-title.is-inview span:nth-child(10) {
  animation-delay: 0.45s;
}
.section-title-en.is-inview span:nth-child(11),
.page-title-section .title.is-inview span:nth-child(11),
.section-title.is-inview span:nth-child(11) {
  animation-delay: 0.5s;
}
.section-title-en.is-inview span:nth-child(12),
.page-title-section .title.is-inview span:nth-child(12),
.section-title.is-inview span:nth-child(12) {
  animation-delay: 0.55s;
}
.section-title-en.is-inview span:nth-child(n + 13),
.page-title-section .title.is-inview span:nth-child(n + 13),
.section-title.is-inview span:nth-child(n + 13) {
  animation-delay: 0.6s;
}

@keyframes slideUpChar {
  0% {
    transform: translateY(100%);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.only-pc{
display: block;		
	}


/* ========================================
   レスポンシブ対応（768px以下）
   ======================================== */
@media (max-width: 768px) {
  /* 横スクロール防止 */
  body {
    overflow-x: hidden;
  }
.only-pc{
display: none;		
	}

  .loader-logo {
    margin-bottom: 24px;
  }

  .loader-tagline {
    font-size: 16px;
  }

  /* コンテナ */
  .container {
    padding: 0 20px;
    max-width: 100%;
    box-sizing: border-box;
  }

  .content-wrapper {
    padding: 0 20px;
    max-width: 100%;
    box-sizing: border-box;
  }

  /* ヘッダー */
  .site-header {
    margin: 0 10px;
    width: calc(100% - 20px);
    max-width: inherit;
    top: 10px;
    left: calc(50% - 10px);
    transform: translateX(-50%);
  }

  .header-container {
    flex-direction: row;
    justify-content: space-between;
    height: 50px;
    padding: 8px 12px;
  }

  .header-logo img {
    width: 70px;
    height: auto;
  }

  /* ハンバーガーボタンを表示 */
  .hamburger-btn {
    display: flex;
    width: 28px;
    height: 22px;
  }

  /* ナビゲーションをデフォルトで非表示 */
  .header-nav {
    position: fixed;
    top: 70px; /* ヘッダーの下 */
    left: 10px;
    right: 10px;
    width: calc(100% - 20px);
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(19px);
    -webkit-backdrop-filter: blur(19px);
    border-radius: 10px;
    box-shadow: 0 4px 16px 0 rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  /* メニューが開いている時 */
  .header-nav.active {
    max-height: 400px;
    opacity: 1;
    visibility: visible;
    padding: 0;
  }

  .nav-menu {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .header-nav .nav-menu {
    gap: 0;
  }

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid rgba(79, 76, 75, 0.1);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu li a {
    width: 100%;
    padding: 14px 16px;
    font-size: 14px;
    justify-content: flex-start;
  }

  .nav-menu li.contact-btn {
    margin: 16px 0;
    padding: 0 16px;
    border-bottom: none;
  }

  .nav-menu li.contact-btn a {
    width: 100%;
    height: 45px;
    border-radius: 22.5px;
    justify-content: center;
    padding: 0;
    font-size: 13px;
  }

  /* フッター全体 */
  .site-footer {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
  }

  /* フッター - お問い合わせセクション */
  .footer-contact {
    height: auto;
    padding: 25px 20px;
    overflow: hidden;
    width: 100%;
    max-width: 100vw;
  }

  .footer-contact-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .footer-contact-wrapper {
    height: auto;
    flex-direction: column;
    gap: 25px;
    padding: 25px 20px;
    max-width: 100%;
    margin: 0;
    box-sizing: border-box;
  }

  .footer-contact-heading {
    width: 100%;
  }

  .footer-contact-heading .footer-contact-label {
    font-size: 12px;
  }

  .footer-contact-heading .footer-contact-title {
    font-size: 28px;
  }

  .footer-contact-content {
    width: 100%;
  }

  .footer-contact-description {
    font-size: 13px;
    line-height: 1.6;
  }

  .footer-contact-description br {
    display: none;
  }

  .footer-contact-button {
    margin-top: 24px;
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .footer-contact-button .btn {
    width: 100%;
    max-width: 300px;
  }

  /* フッター - メインセクション */
  .footer-main {
    padding: 60px 0 0;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
  }

  .footer-container {
    flex-direction: column;
    gap: 40px;
    padding: 0 20px;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-logo-main img {
    width: 80px;
  }

  /* フッターナビゲーション */
  .footer-nav-section {
    flex-direction: column;
    gap: 30px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-nav-column {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-nav-column-link {
    font-size: 16px;
    margin-bottom: 15px;
  }

  .footer-nav-column-link--about,
  .footer-nav-column-link--project,
  .footer-nav-column-link--news {
    width: 100%;
    margin-left: 0;
  }

  .footer-nav-column ul li a {
    font-size: 13px;
  }

  .footer-contact-btn {
    margin-top: 10px;
  }

  .footer-contact-btn .btn {
    width: 100%;
    max-width: 300px;
  }

  /* フッター下部 */
  .footer-bottom {
    margin-top: 60px;
    padding: 25px 0;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
  }

  .footer-bottom-container {
    flex-direction: column;
    gap: 60px;
    padding: 0 20px;
    align-items: flex-start;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-brand-logos {
    flex-direction: column;
    gap: 40px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .brand-logo-item {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .brand-logo-image,
  .brand-logo-image img {
    width: 120px;
    max-width: 100%;
  }

  .brand-logo-placeholder {
    width: 120px;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-bottom-right {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .footer-links {
    flex-wrap: wrap;
    font-size: 13px;
    word-break: break-word;
  }

  .footer-links a {
    font-size: 13px;
  }

  .footer-copyright {
    text-align: left;
    font-size: 11px;
    word-break: break-word;
  }

  /* ブランドセクション */
  .brand-section {
    padding: 60px 0;
  }

  .brand-section .container {
    flex-direction: column;
    gap: 30px;
  }

  .brand-section-description {
    font-size: 13px;
  }

  .brand-list {
    width: 100%;
    gap: 30px;
  }

  .brand-item {
    flex-direction: column;
    gap: 25px;
    padding: 25px 20px;
  }

  .brand-logo {
    justify-content: center;
  }

  .brand-logo p,
  .brand-logo img {
    width: 150px;
  }

  .brand-name {
    font-size: 18px;
    margin-bottom: 15px;
    text-align: center;
  }

  .brand-description {
    font-size: 13px;
    margin-bottom: 20px;
    text-align: center;
  }

  .brand-item .btn {
    width: 100%;
    max-width: 250px;
    margin: 0 auto;
  }

  /* ニュース一覧 */
  .news-item-link {
    padding: 25px 15px;
    flex-direction: column;
    gap: 15px;
  }

  .news-item-meta {
    gap: 15px;
  }

  .news-item-title {
    font-size: 16px;
  }

  .news-arrow {
    position: absolute;
    right: 15px;
    top: 25px;
    font-size: 20px;
  }

  /* プロジェクト一覧 */
  .project-image {
    height: 180px;
  }

  .project-title {
    margin-top: 8px;
    font-size: 14px;
  }

  .project-category {
    font-size: 11px;
  }

  /* ボタン共通 */
  .btn {
    width: 100%;
    max-width: 300px;
    height: 50px;
    font-size: 13px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 0 20px;
  }

  /* ページタイトルセクション */
  .page-title-section {
    padding: 40px 0;
  }

  .page-title-section .subtitle {
    font-size: 12px;
  }

  .page-title-section .title {
    font-size: 36px;
  }

  .title-line {
    margin-top: 15px;
  }

  /* セクション共通 */
  .section-label {
    font-size: 12px;
  }

  .section-title-en {
    font-size: 28px;
  }

  .section-title {
    font-size: 24px !important;
  }

  .section-subtitle {
    font-size: 12px;
  }

  .section-description {
    font-size: 13px;
  }

  /* スクロールトップボタン */
  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 18px;
  }

  /* 404ページ */
  .error-404-page {
    min-height: 70vh;
    padding: 40px 20px;
  }

  .error-404-page h1 {
    font-size: 80px;
  }

  .error-404-page h2 {
    font-size: 20px;
  }

  .error-404-page p {
    font-size: 14px;
  }

  .error-404-page .btn-home {
    padding: 12px 30px;
    font-size: 14px;
  }
}