/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基本設定 */
body {
    font-family: 'Noto Sans JP', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* ヘッダー */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    display: grid;
    grid-template-columns: 3rem 1fr;
    place-items: center;
    gap: .5rem;
    color: #2c5aa0;
    font-size: 1.5rem;
    font-weight: 700;
}
    .logo__img img {
        max-width: 100%;
        width: auto;
    }
    .logo span.logo__sub-txt {
        font-size: 0.9rem;
        color: #666;
    }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #2c5aa0;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background: none;
    border: 1px solid #ddd;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.lang-btn.active,
.lang-btn:hover {
    background: #2c5aa0;
    color: white;
    border-color: #2c5aa0;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* メインビジュアル - 青色統一バージョン */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3f73 100%);
    color: white;
    padding-top: 80px;
}

.hero-content {
    flex: 1;
    padding: 2rem;
    max-width: 500px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #ff6b6b;
    color: white;
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2c5aa0;
}

/* ダウンロードセクション - 75%サイズ */
.download-section {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
    transform: scale(0.75);
    transform-origin: top left;
    width: 133.33%; /* 100% / 0.75 = 133.33% */
}

.download-title {
    font-size: 1.125rem; /* 1.5rem * 0.75 */
    font-weight: 600;
    margin-bottom: 1.125rem; /* 1.5rem * 0.75 */
    text-align: center;
    color: white;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem; /* 1rem * 0.75 */
    margin-bottom: 0.75rem; /* 1rem * 0.75 */
}

.download-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.125rem 0.75rem; /* 1.5rem 1rem * 0.75 */
    background: rgba(255, 255, 255, 0.15);
    border-radius: 11.25px; /* 15px * 0.75 */
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.download-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.download-item:hover::before {
    left: 100%;
}

.download-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3.75px); /* -5px * 0.75 */
    box-shadow: 0 7.5px 18.75px rgba(0, 0, 0, 0.2); /* 0 10px 25px * 0.75 */
}

.download-icon {
    font-size: 1.875rem; /* 2.5rem * 0.75 */
    margin-bottom: 0.6rem; /* 0.8rem * 0.75 */
    transition: transform 0.3s ease;
}

.download-item:hover .download-icon {
    transform: scale(1.1);
}

.download-item span {
    font-size: 0.675rem; /* 0.9rem * 0.75 */
    font-weight: 500;
    text-align: center;
    line-height: 1.3;
}

.download-note {
    text-align: center;
    font-size: 0.6rem; /* 0.8rem * 0.75 */
    opacity: 0.8;
    margin-top: 0.75rem; /* 1rem * 0.75 */
    font-style: italic;
}

/* デスクトップとモバイルの表示切り替え */
.mobile-download {
    display: none;
}

.desktop-download {
    display: block;
}

/* デュアル画像セクション */
.hero-images {
    flex: 1;
    padding: 2rem;
}

.image-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.image-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.image-card:hover {
    transform: translateY(-10px);
}

.image-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 2rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.image-card:hover .image-overlay {
    transform: translateY(0);
}

.image-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.image-overlay p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.4;
}

/* 教師紹介セクション */
.teachers-intro {
    padding: 5rem 0;
    background: #f8f9fa;
}

.teachers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

.teacher-highlight {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: center;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.teacher-highlight:hover {
    transform: translateY(-5px);
}

.teacher-highlight:nth-child(even) {
    grid-template-columns: 1fr 300px;
}

.teacher-highlight:nth-child(even) .teacher-image {
    order: 2;
}

.teacher-highlight:nth-child(even) .teacher-info {
    order: 1;
}

.teacher-image {
    position: relative;
}

.teacher-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.teacher-info h3 {
    color: #2c5aa0;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.teacher-info p {
    color: #555;
    line-height: 1.8;
    font-size: 1rem;
}

/* セクション共通 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c5aa0;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #ff6b6b;
    margin: 1rem auto;
    border-radius: 2px;
}

/* 学校紹介 */
.about {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* メインコンセプト */
.main-concept {
    margin-bottom: 4rem;
}

.concept-card {
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3f73 100%);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(44, 90, 160, 0.3);
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.concept-card:hover {
    transform: translateY(-10px);
}

.concept-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.concept-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.concept-card p {
    font-size: 1.2rem;
    line-height: 1.8;
    opacity: 0.95;
}

/* 友好関係セクション */
.friendship-section {
    margin-bottom: 4rem;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.friendship-content {
    text-align: center;
}

.flags {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    gap: 2rem;
}

.flag-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.flag {
    font-size: 4rem;
    border-radius: 50%;
    padding: 1rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.connection-line {
    display: flex;
    align-items: center;
    position: relative;
}

.connection-line::before {
    content: '';
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
    border-radius: 2px;
}

.heart {
    font-size: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    padding: 0.5rem;
    border-radius: 50%;
    animation: heartbeat 2s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.1); }
}

.flag-item span {
    font-weight: 600;
    color: #2c5aa0;
    font-size: 1.1rem;
}

.friendship-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    max-width: 800px;
    margin: 0 auto;
}

/* 約束セクション */
.promises-section {
    margin-bottom: 4rem;
}

.promises-title {
    text-align: center;
    font-size: 2rem;
    color: #2c5aa0;
    margin-bottom: 2rem;
    font-weight: 700;
}

.promises-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.promise-item {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.promise-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
}

.promise-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.promise-item.kindness:hover {
    background: linear-gradient(135deg, #fff5f5 0%, #ffe0e0 100%);
}

.promise-item.politeness:hover {
    background: linear-gradient(135deg, #f0fff4 0%, #dcffdc 100%);
}

.promise-item.speed:hover {
    background: linear-gradient(135deg, #fff8dc 0%, #ffebcd 100%);
}

.promise-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.promise-item h4 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.promise-item p {
    color: #666;
    line-height: 1.6;
}

/* メッセージセクション */
.message-section {
    margin-bottom: 4rem;
}

.message-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.message-card {
    background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
    color: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(78, 205, 196, 0.3);
    transition: transform 0.3s ease;
}

.message-card:hover {
    transform: translateY(-5px);
}

.message-card.society {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    box-shadow: 0 15px 35px rgba(255, 107, 107, 0.3);
}

.message-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.message-card p {
    font-size: 1.2rem;
    line-height: 1.7;
    font-weight: 500;
}

/* 教育理念セクション */
.philosophy-section {
    margin-bottom: 4rem;
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3f73 100%);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(44, 90, 160, 0.3);
}

.philosophy-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.philosophy-section h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.philosophy-section p {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
    opacity: 0.95;
}

/* 学校基本情報セクション */
.school-info-section {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.info-title {
    text-align: center;
    font-size: 1.8rem;
    color: #2c5aa0;
    margin-bottom: 2rem;
    font-weight: 700;
}

.school-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.info-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 3px solid transparent;
    background-clip: padding-box;
    position: relative;
    transition: all 0.3s ease;
}

.info-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
    border-radius: 15px;
    z-index: -1;
    padding: 3px;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.info-item h4 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.info-item p {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ff6b6b;
}

/* 学校の強み */
.strengths {
    padding: 5rem 0;
    background: white;
}

.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.strength-item {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: #f8f9fa;
    transition: transform 0.3s, box-shadow 0.3s;
}

.strength-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.strength-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.strength-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.strength-item p {
    color: #666;
    line-height: 1.6;
}

/* コース紹介 */
.courses {
    padding: 5rem 0;
    background: #f8f9fa;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.course-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.course-item:hover {
    transform: translateY(-5px);
}

.course-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.course-item p {
    color: #666;
    line-height: 1.6;
}

/* アクセス情報 - 配置変更版 */
.access {
    padding: 5rem 0;
    background: white;
}

.access-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

/* Dhaka校を左側に配置 */
.dhaka-office {
    order: 1;
}

/* 東京事務所を右側に配置 */
.tokyo-office {
    order: 2;
}

.office-info {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.office-info:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.office-info h3 {
    color: #2c5aa0;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    padding-bottom: 1rem;
    border-bottom: 2px solid #2c5aa0;
}

.contact-details p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.contact-details strong {
    color: #2c5aa0;
}

/* お問い合わせ */
.contact {
    padding: 5rem 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-info p {
    color: #666;
    line-height: 1.6;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

/* フッター */
.footer {
    background: #2c5aa0;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-info h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-contact h4 {
    margin-bottom: 1rem;
    color: #ff6b6b;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    opacity: 0.8;
}

/* レスポンシブデザイン */
@media (max-width: 1024px) {
    .teacher-highlight {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .teacher-highlight:nth-child(even) {
        grid-template-columns: 1fr;
    }
    
    .teacher-highlight:nth-child(even) .teacher-image,
    .teacher-highlight:nth-child(even) .teacher-info {
        order: unset;
    }
    
    .image-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 20px 50px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .image-container {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .strengths-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .promises-grid {
        grid-template-columns: 1fr;
    }
    
    .message-cards {
        grid-template-columns: 1fr;
    }
    
    .flags {
        flex-direction: column;
        gap: 1rem;
    }
    
    .connection-line {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
    
    .concept-card {
        padding: 2rem;
    }
    
    .concept-card h3 {
        font-size: 1.5rem;
    }
    
    .philosophy-section {
        padding: 2rem;
    }
    
    .school-info {
        grid-template-columns: 1fr;
    }
    
    .teacher-highlight {
        padding: 2rem;
    }
    
    .teachers-intro {
        padding: 3rem 0;
    }
    
    /* アクセス情報のレスポンシブ対応 */
    .access-content {
        grid-template-columns: 1fr;
    }
    
    .dhaka-office,
    .tokyo-office {
        order: unset;
    }
    
    /* レスポンシブ時のダウンロードセクション表示切り替え */
    .desktop-download {
        display: none;
    }
    
    .mobile-download {
        display: block;
        margin-top: 2rem;
        transform: scale(1); /* モバイルでは通常サイズ */
        width: 100%;
    }
    
    /* モバイル版ダウンロードセクションの調整 */
    .mobile-download .download-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .mobile-download .download-title {
        font-size: 1.2rem;
    }
    
    .mobile-download .download-item {
        padding: 1rem 0.75rem;
    }
    
    .mobile-download .download-icon {
        font-size: 2rem;
    }
    
    .mobile-download .download-item span {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .concept-card {
        padding: 1.5rem;
    }
    
    .concept-icon {
        font-size: 3rem;
    }
    
    .promise-item {
        padding: 1.5rem;
    }
    
    .message-card {
        padding: 1.5rem;
    }
    
    .philosophy-section {
        padding: 1.5rem;
    }
    
    .teacher-highlight {
        padding: 1.5rem;
    }
    
    .teacher-image img {
        height: 200px;
    }
    
    .image-card img {
        height: 250px;
    }
    
    /* スマホでのダウンロードセクション */
    .mobile-download .download-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .mobile-download .download-item {
        padding: 1rem;
        flex-direction: row;
        text-align: left;
        gap: 1rem;
    }
    
    .mobile-download .download-icon {
        font-size: 1.5rem;
        margin-bottom: 0;
        flex-shrink: 0;
    }
    
    .mobile-download .download-item span {
        font-size: 0.9rem;
        text-align: left;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.strength-item,
.course-item,
.concept-card,
.promise-item,
.message-card,
.teacher-highlight,
.download-section {
    animation: fadeInUp 0.6s ease-out;
}

/* 追加のアニメーション効果 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.concept-icon,
.promise-icon,
.message-icon,
.download-icon {
    animation: float 3s ease-in-out infinite;
}

/* グラデーション背景のアニメーション */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.concept-card,
.philosophy-section {
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
}

/* 画像ホバー効果の追加 */
@keyframes slideInFromBottom {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.image-overlay {
    animation: slideInFromBottom 0.3s ease-out;
}

/* ダウンロードアイテムのアニメーション */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.download-item:hover {
    animation: pulse 1.5s infinite;
}