/* =========================================
   リセット & グローバルスタイル
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* カラーパレット */
  --primary-color: #0066cc;
  --secondary-color: #00a6ff;
  --accent-color: #ff6b35;
  --dark-color: #1a1a2e;
  --light-color: #f8f9fa;
  --text-color: #333333;
  --text-light: #666666;
  --white: #ffffff;
  --border-color: #e0e0e0;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
  
  /* タイポグラフィ */
  --font-primary: 'Noto Sans JP', sans-serif;
  --font-secondary: 'Poppins', sans-serif;
  
  /* トランジション */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--text-color);
  line-height: 1.7;
  overflow-x: hidden;
  background-color: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* =========================================
   ボタンスタイル
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  font-family: var(--font-primary);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-color);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--white);
}

.btn-contact {
  background: linear-gradient(135deg, var(--accent-color), #ff8c5f);
  color: var(--white);
  box-shadow: var(--shadow);
  padding: 18px 40px;
  font-size: 18px;
}

.btn-contact:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* =========================================
   ヘッダー/ナビゲーション
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo img {
  height: 50px;
  transition: var(--transition);
}

.nav-list {
  display: flex;
  gap: 35px;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  position: relative;
  color: var(--text-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
}

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

.nav-link.contact-btn {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-radius: 25px;
}

.nav-link.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.nav-link.contact-btn::after {
  display: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  border-radius: 2px;
  transition: var(--transition);
}

/* =========================================
   ヒーローセクション
   ========================================= */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.8), rgba(0, 166, 255, 0.6));
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--white);
  padding: 0 20px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  font-family: var(--font-secondary);
  margin-bottom: 20px;
  letter-spacing: 2px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* スクロールインジケーター */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  animation: bounce 2s infinite;
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid var(--white);
  border-radius: 15px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--white);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 1.5s infinite;
}

.arrow span {
  display: block;
  width: 10px;
  height: 10px;
  border-bottom: 2px solid var(--white);
  border-right: 2px solid var(--white);
  transform: rotate(45deg);
  animation: arrow 1.5s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

@keyframes scroll {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

@keyframes arrow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* フェードインアニメーション */
.fade-in {
  animation: fadeIn 1s ease-out;
}

.fade-in-delay {
  animation: fadeIn 1s ease-out 0.3s both;
}

.fade-in-delay-2 {
  animation: fadeIn 1s ease-out 0.6s both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================================
   セクション共通スタイル
   ========================================= */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 15px;
}

.title-underline {
  width: 80px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  margin: 0 auto 25px;
  border-radius: 2px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.9;
}

/* =========================================
   特徴セクション
   ========================================= */
.features-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--light-color) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.feature-card {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition-slow);
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.feature-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.feature-card:hover .feature-image img {
  transform: scale(1.1);
}

.feature-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.9), rgba(0, 166, 255, 0.8));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover .feature-overlay {
  opacity: 1;
}

.feature-overlay i {
  font-size: 4rem;
  color: var(--white);
}

.feature-content {
  padding: 30px;
  position: relative;
}

.feature-number {
  position: absolute;
  top: -25px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.feature-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.feature-text {
  color: var(--text-light);
  line-height: 1.8;
}



/* =========================================
   製品紹介セクション
   ========================================= */
.product-section {
  background: var(--white);
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-image {
  position: relative;
}

.product-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-hover);
}

.product-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--accent-color);
  color: var(--white);
  padding: 8px 20px;
  border-radius: 25px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.product-info {
  padding: 20px 0;
}

.product-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 15px;
  line-height: 1.4;
}

.product-subtitle {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin-bottom: 35px;
  font-weight: 600;
}

.product-points {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.product-points li {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 15px;
  background: var(--light-color);
  border-radius: 10px;
  transition: var(--transition);
}

.product-points li:hover {
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), rgba(0, 166, 255, 0.05));
  transform: translateX(5px);
}

.product-points i {
  color: var(--primary-color);
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.product-points span {
  line-height: 1.7;
  color: var(--text-color);
}

/* =========================================
   利用場所セクション
   ========================================= */
.locations-section {
  background: linear-gradient(180deg, var(--light-color) 0%, var(--white) 100%);
}

.locations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.location-card {
  position: relative;
  height: 350px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
}

.location-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.location-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
  color: var(--white);
  padding: 40px 25px 25px;
  transform: translateY(0);
  transition: var(--transition);
}

.location-card:hover img {
  transform: scale(1.1);
}

.location-card:hover .location-overlay {
  background: linear-gradient(to top, rgba(0, 102, 204, 0.95), rgba(0, 166, 255, 0.8));
}

.location-overlay h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.location-overlay p {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* =========================================
   選ばれる理由セクション
   ========================================= */
.reasons-section {
  background: var(--dark-color);
  color: var(--white);
}

.reasons-section .section-title {
  color: var(--white);
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.reason-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition-slow);
}

.reason-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-10px);
  border-color: rgba(255, 255, 255, 0.2);
}

.reason-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
}

.reason-icon i {
  font-size: 2.5rem;
  color: var(--white);
}

.reason-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.reason-text {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

/* =========================================
   利用方法セクション（左：番号／右：本文 固定）
   ========================================= */
.usage-section {
  background: var(--white);
}

.usage-logo {
  margin: 0 auto 20px;
  max-width: 200px;
}

.timeline {
  max-width: 880px;
  margin: 60px auto 0;
  position: relative;
}

/* 真ん中の縦ラインは不要なら非表示。必要なら block に。 */
.timeline::before {
  content: '';
  /*display: none;            ← 縦ラインを消す */
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

/* 左：丸数字 / 右：本文 の2カラムで固定 */
.timeline-item {
  display: grid;
  grid-template-columns: 80px 1fr; /* 左を固定幅、右を可変 */
  gap: 24px;
  align-items: start;
  margin-bottom: 40px;
  position: relative;
}

/* 交互レイアウトの指定は無効化（完全固定にする） */
.timeline-item:nth-child(even) .timeline-content,
.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 2 / 3;
  text-align: left;
}

/* マーカー（丸数字）を左に固定 */
.timeline-marker {
  grid-column: 1 / 2;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

/* 丸数字の見た目 */
.timeline-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
  border: 4px solid var(--white);
}

/* 本文カード（右） */
.timeline-content {
  grid-column: 2 / 3;
  background: var(--light-color);
  padding: 24px 28px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.timeline-content:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.timeline-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 8px;
}

.timeline-text {
  color: var(--text-light);
  line-height: 1.8;
  margin: 0;
}

/* レスポンシブ */
@media (max-width: 768px) {
  .timeline {
    margin-top: 40px;
    padding: 0 16px;
  }
  .timeline-item {
    grid-template-columns: 60px 1fr; /* スマホ時は少しコンパクトに */
    gap: 16px;
    margin-bottom: 28px;
  }
  .timeline-number {
    width: 52px;
    height: 52px;
    font-size: 1.25rem;
    border-width: 3px;
  }
  .timeline-content {
    padding: 18px 20px;
  }
  .timeline-title {
    font-size: 1.2rem;
    margin-bottom: 6px;
  }
}

/* =========================================
   FAQセクション
   ========================================= */
.faq-section {
  background: linear-gradient(180deg, var(--light-color) 0%, var(--white) 100%);
}

.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: 15px;
  margin-bottom: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-checkbox {
  display: none;
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 25px 30px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--dark-color);
  transition: var(--transition);
  user-select: none;
}

.faq-question:hover {
  background: var(--light-color);
}

.faq-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
  flex-shrink: 0;
}

.faq-text {
  flex: 1;
}

.faq-toggle {
  font-size: 1.2rem;
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-checkbox:checked + .faq-question .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-checkbox:checked ~ .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 30px 25px 75px;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-more {
  text-align: center;
  margin-top: 50px;
}

/* =========================================
   お問い合わせセクション
   ========================================= */
.contact-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
}

.contact-wrapper {
  max-width: 1000px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 50px;
}

.contact-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.5;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 50px;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 50px;
  margin-bottom: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-info-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon i {
  font-size: 1.5rem;
}

.contact-info-details h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.contact-info-details p {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.6;
}

.contact-phone a {
  color: var(--white);
  font-weight: 700;
  font-size: 1.3rem;
}

.contact-phone a:hover {
  text-decoration: underline;
}

.contact-fax {
  font-weight: 700;
  font-size: 1.1rem;
}

.contact-button-wrapper {
  display: flex;
  align-items: center;
}

.contact-footer {
  text-align: center;
  font-size: 1.05rem;
  opacity: 0.95;
}

/* =========================================
   フッター
   ========================================= */
.footer {
  background: var(--dark-color);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

.footer-logo img {
  max-width: 180px;
  margin-bottom: 20px;
}

.footer-tagline {
  font-size: 0.95rem;
  opacity: 0.8;
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  opacity: 0.8;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--secondary-color);
  transform: translateX(5px);
}

.footer-contact p {
  margin-bottom: 10px;
  opacity: 0.8;
}

.footer-contact i {
  margin-right: 10px;
  color: var(--secondary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
  font-size: 0.9rem;
}

/* =========================================
   ページトップボタン
   ========================================= */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* =========================================
   スクロールアニメーション
   ========================================= */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

/* =========================================
   レスポンシブデザイン
   ========================================= */
@media (max-width: 1024px) {
  .product-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .timeline::before {
    left: 30px;
  }
  
  .timeline-item {
    grid-template-columns: auto 1fr;
  }
  
  .timeline-item:nth-child(even) .timeline-content,
  .timeline-item:nth-child(odd) .timeline-content {
    grid-column: 2 / 3;
    text-align: left;
  }
  
  .timeline-marker {
    grid-column: 1 / 2;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-button-wrapper {
    justify-content: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  
  .nav {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-list {
    flex-direction: column;
    padding: 20px;
    gap: 20px;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .features-grid,
  .locations-grid,
  .reasons-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .timeline-number {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }
  
  .contact-content {
    padding: 30px 20px;
  }
  
  .contact-info-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .back-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }
  
  .feature-content,
  .timeline-content {
    padding: 20px;
  }
  
  .faq-question {
    padding: 20px;
    font-size: 1rem;
  }
  
  .faq-answer p {
    padding: 0 20px 20px 20px;
  }
}
.section-title {
  text-align: center !important;
  margin-left: auto;
  margin-right: auto;
  display: block;
}
.section-description {
  text-align: center !important;
  margin-left: auto;
  margin-right: auto;
  display: block;
}
/* 背景を“その要素の見た目のまま”100vwに広げる（内容幅はそのまま） */
.feature-section,
.usecases-section,
.reasons-section,
.faq-section,
.contact-section {
  position: relative;
  isolation: isolate; /* 背景用の擬似要素を背面に固定 */
}

/* 背景を継承して横いっぱいに描画 */
.feature-section::before,
.usecases-section::before,
.reasons-section::before,
.faq-section::before,
.contact-section::before {
  content: "";
  position: absolute;
  inset: 0;           /* top/right/bottom/left: 0 */
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;       /* 画面幅いっぱい */
  background: inherit;/* セクションに設定済みの background をそのまま使う */
  z-index: -1;        /* コンテンツの背面に回す */
}
/* ===== 残りの背景フル幅対応 ===== */
.features-section,
.locations-section {
  position: relative;
  isolation: isolate;
}

.features-section::before,
.locations-section::before {
  content: "";
  position: absolute;
  inset: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  background: inherit;
  z-index: -1;
}

/* 万が一 container 側に背景が付いていたら強制で外す（保険対応） */
.features-section > .container,
.locations-section > .container {
  background: transparent !important;
}