body {
  background: #f6f8fa;
  color: #181c24;
  font-family: 'Inter', 'Montserrat', 'Noto Sans JP', 'Helvetica Neue', Arial, 'Liberation Sans', sans-serif;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.7;
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: #fff;
  box-shadow: 0 2px 8px 0 rgba(0,0,0,0.04);
  z-index: 100;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}
.logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent-primary);
  line-height: 1.1;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.navbar ul {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}
.navbar a {
  text-decoration: none;
  color: #1a365d;
  font-size: 1rem;
  font-weight: 400;
  transition: color 0.2s;
}
.navbar a:hover {
  color: #3182ce;
}
.hero-section {
  background: linear-gradient(90deg, #e3eafc 0%, #f5f7fa 100%);
  border-bottom: 1px solid #e2e8f0;
  padding: 64px 0 48px 0;
}
.hero-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.hero-content {
  flex: 1;
}
.hero-content h1 {
  font-size: 2.2rem;
  line-height: 1.15;
}
.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 32px;
  color: #2d3748;
}
.cta-btn {
  display: inline-block;
  background: linear-gradient(90deg, #3182ce 0%, #63b3ed 100%);
  color: #fff;
  font-weight: 600;
  border-radius: 24px;
  padding: 14px 36px;
  text-decoration: none;
  font-size: 1.1rem;
  box-shadow: 0 2px 12px 0 rgba(49,130,206,0.13);
  transition: background 0.3s, transform 0.2s;
}
.cta-btn:hover {
  background: linear-gradient(90deg, #63b3ed 0%, #3182ce 100%);
  transform: scale(1.05);
}
.hero-image {
  position: relative;
  width: 550px;
  height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-img {
  position: absolute;
  top: 0; left: 0;
  width: 550px;
  height: 350px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 8px 32px 0 rgba(49,130,206,0.13);
  border: 4px solid #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.7s;
  z-index: 1;
}
.hero-img.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
}
.service-section {
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  padding: 64px 0 48px 0;
}
.service-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 40px;
  letter-spacing: 0.06em;
  text-align: center;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}
.service-card {
  background: #f5f7fa;
  border-radius: 18px;
  box-shadow: 0 2px 16px 0 rgba(49,130,206,0.07);
  padding: 32px 24px 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid #e2e8f0;
  transition: box-shadow 0.3s, border 0.3s;
}
.service-card:hover {
  box-shadow: 0 8px 32px 0 rgba(49,130,206,0.13);
  border: 1.5px solid #3182ce;
}
.icon-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, #63b3ed 0%, #e3eafc 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 18px;
  box-shadow: 0 2px 8px 0 rgba(49,130,206,0.09);
}
.service-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: #1a365d;
}
.service-card ul {
  margin: 0 0 12px 0;
  padding: 0 0 0 18px;
  font-size: 1rem;
  color: #2d3748;
}
.service-card ul li {
  margin-bottom: 8px;
}
.pricing-card .price {
  font-size: 2rem;
  font-weight: 700;
  color: #3182ce;
  margin-bottom: 10px;
  margin-top: 8px;
}
.pricing-card .price span {
  font-size: 1rem;
  color: #888;
  font-weight: 400;
  margin-left: 8px;
}
.enroll-btn {
  background: linear-gradient(90deg, #3182ce 0%, #63b3ed 100%);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 12px 36px;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 12px;
  box-shadow: 0 2px 12px 0 rgba(49,130,206,0.13);
  transition: background 0.3s, transform 0.2s;
  text-decoration: none;
  display: inline-block;
}
.enroll-btn:hover {
  background: linear-gradient(90deg, #63b3ed 0%, #3182ce 100%);
  transform: scale(1.07);
}
.about-section {
  background: #f7fafc;
  border-bottom: 1px solid #e2e8f0;
  padding: 64px 0 48px 0;
}
.about-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 40px;
  letter-spacing: 0.06em;
  text-align: center;
}
.about-grid {
  display: flex;
  gap: 48px;
  align-items: center;
  justify-content: space-between;
}
.about-info {
  flex: 1;
}
.about-info ul {
  font-size: 1.1rem;
  color: #2d3748;
  padding-left: 0;
  list-style: none;
}
.about-info ul li {
  margin-bottom: 16px;
}
.about-img {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}
.about-img img {
  width: 320px;
  height: 220px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 4px 24px 0 rgba(49,130,206,0.13);
  border: 3px solid #fff;
}
.contact-section {
  background: #fff;
  padding: 64px 0 48px 0;
}
.contact-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 40px;
  letter-spacing: 0.06em;
  text-align: center;
}
.contact-grid {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  justify-content: space-between;
}
.contact-info {
  flex: 1;
}
.contact-info ul {
  font-size: 1.1rem;
  color: #2d3748;
  padding-left: 0;
  list-style: none;
}
.contact-info ul li {
  margin-bottom: 16px;
}
.contact-form {
  flex: 1;
  background: #f5f7fa;
  border-radius: 18px;
  box-shadow: 0 2px 16px 0 rgba(49,130,206,0.07);
  padding: 32px 24px 28px 24px;
  border: 1px solid #e2e8f0;
}
.contact-form form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-form input,
.contact-form textarea {
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 12px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  resize: none;
}
.contact-form button {
  background: linear-gradient(90deg, #3182ce 0%, #63b3ed 100%);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 12px 36px;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 2px 12px 0 rgba(49,130,206,0.13);
  transition: background 0.3s, transform 0.2s;
}
.contact-form button:hover {
  background: linear-gradient(90deg, #63b3ed 0%, #3182ce 100%);
  transform: scale(1.07);
}
footer {
  background: #1a365d;
  color: #fff;
  text-align: center;
  font-size: 0.95rem;
  padding: 32px 0 18px 0;
  margin-top: 0;
}
.badges-row {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
}
.badge-block {
  background: #e3eafc;
  border-radius: 16px;
  box-shadow: 0 2px 8px 0 rgba(49,130,206,0.07);
  padding: 24px 32px;
  min-width: 180px;
  text-align: center;
  margin-bottom: 12px;
  border: 1.5px solid #c3dafe;
  transition: box-shadow 0.2s, border 0.2s;
}
.badge-block:hover {
  box-shadow: 0 8px 24px 0 rgba(49,130,206,0.13);
  border: 1.5px solid #3182ce;
}
.badge-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 8px;
}
.badge-desc {
  font-size: 0.98rem;
  color: #2d3748;
}
.info-block {
  background: #f5f7fa;
  border-radius: 14px;
  box-shadow: 0 2px 8px 0 rgba(49,130,206,0.07);
  padding: 24px 32px;
  text-align: center;
  margin: 32px auto 0 auto;
  max-width: 340px;
  border: 1.5px solid #cbd5e1;
}
.info-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 8px;
}
.info-desc {
  font-size: 1rem;
  color: #2d3748;
}
.features-section {
  background: linear-gradient(120deg, #f7fafc 60%, #e3eafc 100%);
  border-bottom: 1px solid #e2e8f0;
}
.features-grid {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}
.feature-card {
  position: relative;
  background: linear-gradient(135deg, #f5fafd 60%, #e3eafc 100%);
  border-radius: 28px;
  box-shadow: 0 6px 32px 0 rgba(49,130,206,0.13), 0 2px 8px 0 rgba(49,130,206,0.10);
  padding: 38px 38px 32px 38px;
  min-width: 260px;
  max-width: 420px;
  text-align: left;
  border: none;
  overflow: hidden;
  margin-bottom: 0;
  transition: box-shadow 0.25s, background 0.22s;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.feature-card::before {
  content: '';
  display: block;
  position: absolute;
  left: 0; top: 0;
  width: 8px; height: 100%;
  background: linear-gradient(180deg, #2b436a 0%, #63b3ed 100%);
  border-radius: 28px 0 0 28px;
}
.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
  padding-left: 12px;
  border-left: 3px solid #3182ce;
}
.feature-desc {
  font-size: 1.05rem;
  color: #2d3748;
  line-height: 1.7;
  margin-bottom: 0;
  padding-left: 12px;
}
/* スライドインアニメーション */
.slidein-left, .slidein-right {
  opacity: 0;
  transform: translateX(0);
  transition: opacity 1.1s cubic-bezier(.77,0,.18,1), transform 1.1s cubic-bezier(.77,0,.18,1);
}
.slidein-left.visible {
  opacity: 1;
  transform: translateX(0);
  animation: slideInLeft 1.1s cubic-bezier(.77,0,.18,1) forwards;
}
.slidein-right.visible {
  opacity: 1;
  transform: translateX(0);
  animation: slideInRight 1.1s cubic-bezier(.77,0,.18,1) forwards;
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-80px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(80px); }
  to { opacity: 1; transform: translateX(0); }
}
/* セクションの上下余白を調整 */
.hero-section, .service-section, .about-section, .contact-section {
  padding-top: 36px;
  padding-bottom: 24px;
}

/* セクション見出しの余白を調整 */
.service-section h2, .about-section h2, .contact-section h2 {
  margin-bottom: 20px;
}

.section-desc {
  margin-bottom: 16px;
}

/* バッジ・カードの余白を調整 */
.badges-row, .features-grid {
  margin-top: 18px;
  gap: 18px;
}
.badge-block, .feature-card, .info-block {
  position: relative;
  background: linear-gradient(135deg, #f5fafd 60%, #e3eafc 100%);
  border-radius: 22px;
  box-shadow: 0 2px 8px 0 rgba(49,130,206,0.10), 0 8px 32px 0 rgba(49,130,206,0.07);
  padding: 22px 28px 20px 28px;
  min-width: 180px;
  text-align: left;
  margin-bottom: 0;
  border: none;
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.22s, background 0.22s;
}
.badge-block::before, .feature-card::before, .info-block::before {
  content: '';
  display: block;
  position: absolute;
  left: 0; top: 0;
  width: 6px; height: 100%;
  background: linear-gradient(180deg, #3182ce 0%, #63b3ed 100%);
  border-radius: 22px 0 0 22px;
}
/* .badge-block, .feature-card, .info-block のホバーアニメーションを完全に削除 */
/* 既存の:hoverセレクタを無効化・削除 */
.badge-title, .feature-title, .info-title {
  font-size: 1.13rem;
  font-weight: 700;
  color: #1a365d;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}
/* サークルアイコン風装飾（ダミー） */
.badge-title::before, .feature-title::before, .info-title::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #63b3ed 0%, #e3eafc 100%);
  margin-right: 4px;
}
.badge-desc, .feature-desc, .info-desc {
  font-size: 0.99rem;
  color: #2d3748;
  margin-bottom: 0;
}

/* カード内タイトル・説明の余白を調整 */
.badge-title, .feature-title, .info-title {
  margin-bottom: 4px;
}

/* セクション間の区切りを明確にしつつ間延びしないよう調整 */
.service-section, .about-section {
  border-bottom: 1px solid #e2e8f0;
}

/* フッターの余白も調整 */
footer {
  padding: 18px 0 8px 0;
}

/* alt-navbar = modern-navbar */
.alt-navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}
.navbar.alt-navbar {
  min-height: 64px;
  display: flex;
  align-items: center;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}
.nav-list {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
  height: 64px;
}
.nav-list li {
  display: flex;
  align-items: center;
  height: 64px;
  padding: 0;
  margin: 0;
}
.nav-list a {
  display: flex;
  align-items: center;
  height: 100%;
  font-size: 1rem;
  color: #0A3D62;
  font-weight: 500;
  text-decoration: none;
  padding: 0 8px;
  line-height: 1.1;
  margin: 0;
  transition: background 0.2s;
}
.nav-list a:hover {
  background: #f7fafc;
  border-radius: 6px;
}
/* alt-hero = modern-hero */
.alt-hero {
  padding: 120px 0 100px 0;
  text-align: center;
}
.alt-hero h1 {
  font-size: 4rem;
  margin-bottom: 2rem;
}
.alt-hero p {
  font-size: 1.3rem;
  margin-bottom: 2.5rem;
}
.cta-btn, .enroll-btn, .alt-cta {
  font-size: 1.25rem;
  padding: 20px 48px;
  border-radius: 14px;
  background: var(--accent-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s, transform 0.2s;
  display: inline-block;
}
.cta-btn:hover, .enroll-btn:hover, .alt-cta:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
}
/* alt-section = modern-section */
.alt-section {
  padding: 100px 0 100px 0;
  border-top: 1px solid var(--border-color);
}
.alt-section-bg {
  background: linear-gradient(120deg, #f7fafc 60%, #e3eafc 100%);
  border-bottom: 1px solid #e2e8f0;
  padding: 56px 0 56px 0;
}
.alt-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.alt-section-reverse {
  grid-template-columns: 1fr 1fr;
}
.alt-section-reverse .alt-section-content {
  order: 1;
}
.alt-section-reverse .alt-section-image {
  order: 2;
}
.alt-section-image img {
  width: 100%;
  border-radius: 15px;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.15);
}
.alt-section-content.feature-card {
  background: #fdfdfd;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 48px 36px;
  text-align: center;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 5px 15px -5px rgba(0,0,0,0.05);
  margin: 0 auto;
}
.feature-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}
.feature-desc ul {
  list-style: none;
  padding: 0;
}
.feature-desc li {
  margin-bottom: 0.75rem;
  padding-left: 25px;
  position: relative;
}
.feature-desc li::before {
  content: '✓';
  color: var(--accent-primary);
  position: absolute;
  left: 0;
  font-weight: 700;
}
.features-section {
  background: linear-gradient(120deg, #f7fafc 60%, #e3eafc 100%);
  border-bottom: 1px solid #e2e8f0;
  padding: 56px 0 56px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 60px;
  justify-items: center;
}
.feature-card {
  background: #fdfdfd;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 48px 36px;
  text-align: center;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 5px 15px -5px rgba(0,0,0,0.05);
}
.service-section.pricing-section {
  padding: 30px 0 30px 0;
  border-top: 1px solid var(--border-color);
}
.price-block {
  padding: 60px 40px;
  max-width: 600px;
  margin: 40px auto 0 auto;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  text-align: center;
}
.price {
  font-family: 'Montserrat', sans-serif;
  font-size: 4.5rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
}
.about-section {
  padding: 100px 0 100px 0;
  border-top: 1px solid var(--border-color);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-info ul {
  list-style: none;
  padding: 0;
}
.about-info li {
  margin-bottom: 1rem;
}
.about-img img {
  width: 100%;
  border-radius: 15px;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,0.15);
}
.contact-section {
  padding: 100px 0 100px 0;
  border-top: 1px solid var(--border-color);
}
.contact-grid {
  display: flex;
  justify-content: center;
}
.contact-info ul {
  list-style: none;
  padding: 0;
  font-size: 1.2rem;
}
.contact-info li {
  margin-bottom: 1rem;
}
.slidein-left { transform: translateX(-40px); opacity: 0; }
.slidein-right { transform: translateX(40px); opacity: 0; }
.slidein-left, .slidein-right {
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.slidein-left.visible, .slidein-right.visible {
  transform: translateX(0);
  opacity: 1;
}
.accent-btn {
  background: linear-gradient(90deg, #0A3D62 0%, #08aeea 100%);
  color: #fff;
  border: none;
  box-shadow: 0 4px 18px 0 rgba(10,61,98,0.13);
}
.outline-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 40px;
  margin-bottom: 40px;
}
.outline-block {
  background: #fdfdfd;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 36px 24px 32px 24px;
  text-align: left;
  box-shadow: 0 5px 15px -5px rgba(0,0,0,0.05);
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.outline-title, .outline-subtitle, .learn-title, .outline-block, .outline-blocks { all: unset; }
.learn-list {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 700px;
}
.learn-list li {
  margin-bottom: 1.1rem;
  padding-left: 24px;
  position: relative;
  font-size: 1.08rem;
  text-align: left;
}
.learn-list li::before {
  content: '✓';
  color: var(--accent-primary);
  position: absolute;
  left: 0;
  font-weight: 700;
}
.fees-card {
  background: #fdfdfd;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 36px 24px 32px 24px;
  text-align: center;
  box-shadow: 0 5px 15px -5px rgba(0,0,0,0.05);
  max-width: 340px;
  margin: 0 auto;
}
.fees-badge {
  display: inline-block;
  background: #08aeea;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: 12px;
  padding: 6px 18px;
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
}
.fees-card .price {
  font-size: 2.2rem;
  font-weight: 700;
  color: #0A3D62;
  margin-bottom: 0.7rem;
}
.fees-card .price span {
  font-size: 1.1rem;
  color: #555;
  font-weight: 400;
  margin-left: 6px;
}
.fees-note {
  color: #888;
  font-size: 0.98rem;
  margin-top: 0.7rem;
}
.contact-flex {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 32px;
}
.contact-item {
  text-align: center;
}
.contact-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: #0A3D62;
  letter-spacing: 0.04em;
}
.contact-value {
  font-size: 1.15rem;
  font-weight: 500;
  color: #222;
  user-select: text;
}
.contact-email {
  user-select: none;
  pointer-events: none;
  color: #888;
  font-style: italic;
}
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.1rem;
  font-weight: 700;
  margin-bottom: 2.2rem;
  letter-spacing: 0.04em;
  text-align: center;
  color: #0A3D62;
}
.learn-list, .audience-list, .method-list {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 700px;
}
.learn-list li, .audience-list li, .method-list li {
  margin-bottom: 1.1rem;
  padding-left: 24px;
  position: relative;
  font-size: 1.08rem;
  text-align: left;
}
.learn-list li::before, .audience-list li::before, .method-list li::before {
  content: '✓';
  color: var(--accent-primary);
  position: absolute;
  left: 0;
  font-weight: 700;
}
.center-list {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.alt-section, .service-section, .about-section, .contact-section {
  padding: 30px 0 30px 0;
  border-top: 1px solid var(--border-color);
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 700px) {
  .container {
    padding: 0 8px;
    max-width: 100vw;
  }
  .section-title {
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
  }
  .alt-section, .service-section, .about-section, .contact-section {
    padding: 48px 0 48px 0;
  }
  .hero-section.alt-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    height: auto !important;
    min-height: unset !important;
    overflow: hidden !important;
    padding-bottom: 0;
    position: relative;
  }
  .hero-flex {
    display: flex;
    flex-direction: column !important;
    align-items: center;
    justify-content: flex-start;
    width: 100vw;
    height: auto;
    min-height: unset;
    box-sizing: border-box;
    position: static;
  }
  .hero-image {
    width: min(96vw, 320px);
    max-width: 100vw;
    min-width: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 220px;
    min-height: unset;
    overflow: visible;
    box-sizing: border-box;
    position: relative;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-img {
    position: absolute !important;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 320px;
    height: auto;
    margin: 0;
    object-fit: contain;
    display: block;
    box-sizing: border-box;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.7s;
    z-index: 1;
  }
  .hero-img.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
  }
  .hero-content h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  .hero-content p {
    font-size: 1rem;
    margin-bottom: 1.2rem;
  }
  .cta-btn, .accent-btn {
    font-size: 1rem;
    padding: 12px 20px;
    border-radius: 8px;
  }
  .price-block.fees-card {
    padding: 18px 8px 16px 8px;
    max-width: 100%;
  }
  .fees-badge {
    font-size: 0.95rem;
    padding: 4px 10px;
    margin-bottom: 0.7rem;
  }
  .fees-card .price {
    font-size: 1.3rem;
    margin-bottom: 0.4rem;
  }
  .fees-note {
    font-size: 0.9rem;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .about-img img {
    max-width: 100%;
    border-radius: 10px;
  }
  .contact-flex {
    flex-direction: column;
    gap: 18px;
    margin-top: 18px;
  }
  .learn-list, .audience-list, .method-list {
    font-size: 0.98rem;
    max-width: 100%;
  }
  .learn-list li, .audience-list li, .method-list li {
    font-size: 0.98rem;
    margin-bottom: 0.7rem;
    padding-left: 18px;
  }
  /* ハンバーガーメニュー */
  .hamburger {
    display: none !important;
  }
  .nav-list {
    display: flex;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
  }
  .nav-list.open {
    display: flex;
    animation: slideDown 0.3s;
  }
  .nav-list li {
    width: 100%;
    text-align: center;
    margin: 0;
    padding: 0;
  }
  .nav-list a {
    display: block;
    padding: 18px 0;
    font-size: 1.15rem;
    color: #0A3D62;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid #e2e8f0;
    transition: background 0.2s;
  }
  .nav-list a:hover {
    background: #f7fafc;
  }
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .nav-container {
    position: relative;
  }
  .navbar ul.nav-list {
    display: none;
  }
}
@media (max-width: 700px) {
  .hero-flex {
    flex-direction: column !important;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    text-align: center;
    padding: 0 0 12px 0;
  }
  .hero-content {
    margin-bottom: 0;
    padding: 0 0 8px 0;
  }
  .hero-image img {
    width: 96vw;
    max-width: 320px;
    height: auto;
    margin: 0 auto;
    border-radius: 12px;
  }
}
.hero-section.alt-hero {
  position: relative;
  overflow: hidden;
}
.hero-bg-img {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}
.hero-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.hero-section.alt-hero > .container,
.hero-flex, .hero-content, .hero-image {
  position: relative;
  z-index: 2;
}
.hero-section.alt-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.72);
  z-index: 1;
}
.hero-flex, .hero-content, .hero-image {
  position: relative;
  z-index: 2;
}
.hero-section.alt-hero {
  height: auto !important;
  min-height: unset !important;
  display: block;
  overflow: hidden;
}
@media (max-width: 700px) {
  .hero-section.alt-hero {
    height: auto !important;
    min-height: unset !important;
    display: block;
    overflow: hidden !important;
    padding-bottom: 0;
  }
}
@media (max-width: 700px) {
  .hero-section.alt-hero > .container {
    max-width: 100vw;
    padding: 0 8px;
    box-sizing: border-box;
  }
}