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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

.section {
    padding: 60px 0;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #1E88E5 0%, #1A237E 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.header-content {
    position: relative;
    z-index: 2;
}

.header-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.header-text {
    text-align: left;
}

.header-book {
    text-align: center;
}

.header-book-image {
    max-width: 280px;
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}

.header-book-image:hover {
    transform: scale(1.05);
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    white-space: nowrap;
}

.sub-title {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.8;
}

.cta-button {
    display: inline-block;
    background: #FFD43B;
    color: #333;
    padding: 20px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 212, 59, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 212, 59, 0.4);
}

/* 信頼性バッジ */
.trust-badges {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 48px 0;
    text-align: center;
}

.badges-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #1A237E;
    padding: 12px 24px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.badge:hover {
    transform: translateY(-2px);
}

/* 共感セクション */
.empathy {
    background: white;
    text-align: center;
}

.section-title {
    font-size: 2.2rem;
    color: #1A237E;
    margin-bottom: 30px;
    font-weight: 700;
    text-align: center;
}

.problems-list {
    list-style: none;
    max-width: 800px;
    margin: 0 auto 50px;
}

.problems-list li {
    padding: 15px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid #eee;
}



.solution-text {
    font-size: 1.3rem;
    color: #1E88E5;
    font-weight: 700;
    background: linear-gradient(90deg, #FFD43B, #FFA726);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* USPセクション */
.usp {
    background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
}

.usp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.usp-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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



.usp-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1A237E;
    margin-bottom: 15px;
}

/* ベネフィットセクション */
.benefits {
    background: white;
}

.benefits-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    border-radius: 15px;
}

.benefit-period {
    background: #1E88E5;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 700;
    margin-right: 20px;
    min-width: 120px;
    text-align: center;
}

.benefit-content h3 {
    color: #1A237E;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

/* 著者・権威性セクション */
.authority {
    background: #1A237E;
    color: white;
}

.authority .section-title {
    color: white;
}

.authority-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
}

.author-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #FFD43B;
}

.publisher-info {
    margin-top: 40px;
}

.publisher-info h4 {
    color: #FFD43B;
    margin-bottom: 10px;
}

/* お客様の声 */
.testimonials {
    background: #f8f9fa;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: white;
    padding: 20px 15px 15px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}



.testimonial-text {
    margin-bottom: 15px;
    font-style: italic;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #444;
    margin-top: 8px;
}

.testimonial-author {
    font-weight: 700;
    color: #1A237E;
    font-size: 0.9rem;
    text-align: right;
    position: relative;
}



/* FAQ */
.faq {
    background: white;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    background: #f8f9fa;
    padding: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #e3f2fd;
}

.faq-answer {
    padding: 20px;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* クロージング */
.closing {
    background: linear-gradient(135deg, #1E88E5 0%, #1A237E 100%);
    color: white;
    text-align: center;
}

.urgency-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.urgency-card {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}



.book-image {
    max-width: 300px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.author-photo {
    max-width: 150px;
    border-radius: 50%;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.author-main-photo {
    max-width: 300px;
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(255,255,255,0.2);
}

/* クロージングセクションのタイトルを白色に */
.closing .section-title {
    color: white;
}

.final-cta-book {
    text-align: center;
    margin-bottom: 30px;
}

.final-book-image {
    max-width: 200px;
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(255,255,255,0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* ナビゲーション */
.nav-link:hover {
    background: rgba(255, 255, 255, 0.2) !important;
}

/* 比較セクション */
.comparison {
    background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
}

.comparison-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: 50px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.comparison-table {
    width: 100%;
    min-width: 800px;
    background: white;
    border-collapse: collapse;
    border-radius: 15px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 20px 15px;
    text-align: center;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: top;
}

.comparison-table th {
    background: #1A237E;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.comparison-table th:first-child {
    background: #2C387E;
    text-align: left;
    font-size: 1rem;
}

.comparison-table .highlight-column {
    background: linear-gradient(135deg, #FFD43B 0%, #FFA726 100%);
    color: #333;
    position: relative;
}

.method-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}



.comparison-table tbody tr:nth-child(even) {
    background: #f8f9fa;
}

.comparison-table tbody tr:nth-child(even) .highlight-column {
    background: linear-gradient(135deg, #FFE082 0%, #FFB74D 100%);
}

.comparison-table tbody th {
    background: #37474F;
    color: white;
    text-align: left;
    font-weight: 700;
}

.good {
    color: #4CAF50;
    font-weight: 700;
    font-size: 1rem;
}

.bad {
    color: #F44336;
    font-weight: 700;
    font-size: 1rem;
}

.neutral {
    color: #FF9800;
    font-weight: 700;
    font-size: 1rem;
}

.detail {
    font-size: 0.8rem;
    color: #666;
    margin-top: 5px;
    line-height: 1.3;
}

.highlight-column .detail {
    color: #555;
}

.comparison-summary {
    max-width: 800px;
    margin: 0 auto;
}

.summary-card {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.summary-card h3 {
    color: #1A237E;
    margin-bottom: 25px;
    font-size: 1.5rem;
    text-align: center;
}

.summary-card ul {
    list-style: none;
    padding: 0;
}

.summary-card li {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    font-size: 1.1rem;
    line-height: 1.6;
}

.summary-card li:last-child {
    border-bottom: none;
}



.summary-card strong {
    color: #1A237E;
}

/* ナビゲーションのモバイル対応 */
@media (max-width: 768px) {
    nav ul {
        gap: 15px !important;
    }
    
    nav a {
        font-size: 0.8rem !important;
        padding: 6px 10px !important;
    }
    
    .main-title {
        white-space: normal;
        font-size: 2rem;
    }
    
    .header-layout {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .header-text {
        text-align: center;
    }
    
    /* 比較表のモバイル対応 */
    .comparison-table {
        min-width: 600px;
        font-size: 0.9rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 15px 10px;
    }
    
    .method-header span {
        font-size: 0.8rem;
    }
    
    .method-icon {
        font-size: 1.2rem;
    }
    
    .summary-card {
        padding: 25px;
    }
    
    .summary-card h3 {
        font-size: 1.3rem;
    }
    
    .summary-card li {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    nav ul {
        gap: 8px !important;
    }
    
    nav a {
        font-size: 0.75rem !important;
        padding: 5px 8px !important;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    /* 比較表の小画面対応 */
    .comparison-table {
        min-width: 500px;
        font-size: 0.8rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 12px 8px;
    }
    
    .method-header span {
        font-size: 0.7rem;
        line-height: 1.2;
    }
    
    .method-icon {
        font-size: 1rem;
    }
    
    .good, .bad, .neutral {
        font-size: 0.9rem;
    }
    
    .detail {
        font-size: 0.7rem;
    }
    
    .summary-card {
        padding: 20px;
    }
    
    .summary-card h3 {
        font-size: 1.2rem;
    }
    
    .summary-card li {
        font-size: 0.9rem;
        padding: 12px 0;
        padding-left: 25px;
    }
}

/* 大学生向けセクション */
.university-section {
    background: linear-gradient(135deg, #e8f5e8 0%, #f0f8ff 100%);
    padding: 80px 0;
}

.university-content {
    max-width: 1000px;
    margin: 0 auto;
}

.university-problems {
    background: white;
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.university-problems h3 {
    color: #1A237E;
    font-size: 1.5rem;
    margin-bottom: 25px;
    text-align: center;
}

.university-problems-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.university-problems-list li {
    padding: 12px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid #f0f0f0;
}

.university-problems-list li:last-child {
    border-bottom: none;
}

.university-solution {
    margin-bottom: 50px;
}

.university-solution h3 {
    color: #1A237E;
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
}

.university-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.university-benefit {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.university-benefit:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}



.university-benefit h4 {
    color: #1A237E;
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.university-benefit p {
    color: #666;
    line-height: 1.6;
}

.university-testimonial {
    background: white;
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}

.university-testimonial h3 {
    color: #1A237E;
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.student-voice {
    background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
    padding: 30px;
    border-radius: 15px;
    border-left: 4px solid #1E88E5;
    font-style: italic;
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.student-voice::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 3rem;
    color: #1E88E5;
    opacity: 0.3;
    font-family: serif;
}

.student-voice p {
    margin-bottom: 15px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #444;
}

.student-voice cite {
    font-weight: 700;
    color: #1A237E;
    font-style: normal;
}

.university-cta {
    text-align: center;
    background: linear-gradient(135deg, #1E88E5 0%, #1A237E 100%);
    padding: 50px;
    border-radius: 20px;
    color: white;
}

.university-cta-text {
    font-size: 1.3rem;
    margin-bottom: 25px;
    font-weight: 700;
}

.university-cta-button {
    background: #FFD43B;
    color: #333;
    padding: 18px 35px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 212, 59, 0.3);
    display: inline-block;
}

.university-cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 212, 59, 0.4);
}