/* レスポンシブ対応 */

/* タブレット・モバイル画面（768px以下） */
@media (max-width: 768px) {
    .header-layout {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .header-text {
        text-align: center;
    }
    
    .header-book-image {
        max-width: 220px;
        transform: rotate(0deg);
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .sub-title {
        font-size: 1.1rem;
    }
    
    .authority-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .badges-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .section {
        padding: 40px 0;
    }

    /* タブレット・モバイル画面での証言カード調整 */
    .testimonial-author {
        text-align: center;
        font-weight: 600;
    }
    
    .testimonial-author::before {
        display: none;
    }
    
    .university-section {
        padding: 60px 0;
    }
    
    .university-benefits {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .university-problems,
    .university-testimonial {
        padding: 30px 20px;
        margin-bottom: 40px;
    }
    
    .university-cta {
        padding: 40px 20px;
    }
}

/* 小さなモバイル画面（480px以下）対応 */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    
    .header {
        padding: 50px 0;
    }
    
    .main-title {
        font-size: 1.7rem;
        line-height: 1.3;
        margin-bottom: 18px;
    }
    
    .sub-title {
        font-size: 1.05rem;
        margin-bottom: 25px;
        line-height: 1.4;
    }
    
    .description {
        font-size: 1rem;
        margin-bottom: 35px;
        line-height: 1.5;
    }
    
    .cta-button {
        padding: 18px 32px;
        font-size: 1.05rem;
        border-radius: 30px;
        line-height: 1.2;
        min-height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
    }
    
    .section {
        padding: 35px 0;
    }
    
    .section-title {
        font-size: 1.7rem;
        margin-bottom: 25px;
        line-height: 1.3;
    }
    
    .trust-badges {
        padding: 25px 0;
    }
    
    .badges-container {
        gap: 15px;
    }
    
    .badge {
        font-size: 0.95rem;
        justify-content: center;
        padding: 8px 12px;
        background: rgba(26, 35, 126, 0.05);
        border-radius: 20px;
        min-height: 40px;
        display: flex;
        align-items: center;
    }
    
    .problems-list {
        margin: 0 auto 40px;
    }
    
    .problems-list li {
        font-size: 1.05rem;
        padding: 15px 0 15px 30px;
        line-height: 1.5;
    }
    
    .problems-list li::before {
        left: 5px;
    }
    
    .solution-text {
        font-size: 1.2rem;
        margin-top: 20px;
        line-height: 1.4;
    }
    
    .usp-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        margin-top: 35px;
    }
    
    .usp-card {
        padding: 25px 20px;
        margin: 0 5px;
    }
    
    .usp-icon {
        font-size: 2.8rem;
        margin-bottom: 18px;
    }
    
    .usp-title {
        font-size: 1.15rem;
        margin-bottom: 12px;
        line-height: 1.3;
    }
    
    .usp-card p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .benefits-timeline {
        margin: 0 -5px;
    }
    
    .benefit-item {
        flex-direction: column;
        padding: 25px 20px;
        margin-bottom: 25px;
        margin-left: 5px;
        margin-right: 5px;
    }
    
    .benefit-period {
        margin-right: 0;
        margin-bottom: 18px;
        min-width: auto;
        width: fit-content;
        align-self: center;
        padding: 12px 20px;
        font-size: 0.95rem;
    }
    
    .benefit-content h3 {
        font-size: 1.15rem;
        margin-bottom: 8px;
        text-align: center;
    }
    
    .benefit-content p {
        font-size: 0.95rem;
        line-height: 1.5;
        text-align: center;
    }
    
    .authority-content {
        gap: 30px;
    }
    
    .author-info h3 {
        font-size: 1.6rem;
        margin-bottom: 20px;
    }
    
    .author-info h4 {
        font-size: 1.15rem;
        margin-bottom: 8px;
    }
    
    .author-info p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .publisher-info {
        margin-top: 25px;
    }
    
    .book-image {
        max-width: 280px;
        margin: 0 auto 20px;
        display: block;
    }
    
    .author-photo {
        max-width: 120px;
        margin: 0 auto 15px;
        display: block;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        margin-top: 35px;
    }
    
    .testimonial-card {
        padding: 20px 15px 15px;
        margin: 0 2px;
    }
    
    .testimonial-card::before {
        font-size: 2.5rem;
        top: 3px;
        left: 12px;
    }
    
    .testimonial-text {
        font-size: 0.9rem;
        margin-bottom: 15px;
        margin-top: 8px;
    }
    
    .testimonial-author {
        font-size: 0.85rem;
        text-align: center;
        padding: 10px 0;
        border-top: 1px solid rgba(30, 136, 229, 0.2);
        margin-top: 12px;
        background: rgba(30, 136, 229, 0.03);
        border-radius: 0 0 10px 10px;
        margin-left: -20px;
        margin-right: -20px;
        margin-bottom: -20px;
        font-weight: 600;
    }
    
    .testimonial-author::before {
        display: none;
    }
    
    .faq-list {
        margin: 0 -5px;
    }
    
    .faq-item {
        margin-bottom: 15px;
        margin-left: 5px;
        margin-right: 5px;
    }
    
    .faq-question {
        padding: 18px 15px;
        font-size: 1rem;
        line-height: 1.4;
        min-height: 60px;
        display: flex;
        align-items: center;
    }
    
    .faq-answer {
        padding: 18px 15px;
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .urgency-points {
        grid-template-columns: 1fr;
        gap: 25px;
        margin: 35px 0;
    }
    
    .urgency-card {
        padding: 25px 20px;
        margin: 0 5px;
    }
    
    .urgency-icon {
        font-size: 2.8rem;
        margin-bottom: 18px;
    }
    
    .urgency-card h3 {
        font-size: 1.15rem;
        margin-bottom: 12px;
        line-height: 1.3;
    }
    
    .urgency-card p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .university-section {
        padding: 40px 0;
    }
    
    .university-problems h3,
    .university-solution h3,
    .university-testimonial h3 {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .university-problems-list li {
        font-size: 1rem;
        padding: 10px 0;
        gap: 10px;
    }
    
    .university-benefit {
        padding: 25px 20px;
        margin: 0 5px;
    }
    
    .benefit-icon {
        font-size: 2.2rem;
        margin-bottom: 12px;
    }
    
    .university-benefit h4 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .university-benefit p {
        font-size: 0.95rem;
    }
    
    .student-voice {
        padding: 25px 20px;
    }
    
    .student-voice::before {
        font-size: 2.5rem;
        top: 8px;
        left: 15px;
    }
    
    .student-voice p {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .university-cta {
        padding: 35px 15px;
    }
    
    .university-cta-text {
        font-size: 1.2rem;
        margin-bottom: 20px;
    }
    
    .university-cta-button {
        padding: 16px 30px;
        font-size: 1rem;
    }
}

/* 非常に小さな画面（320px以下）向けさらなる調整 */
@media (max-width: 320px) {
    .container {
        padding: 0 8px;
    }
    
    .header {
        padding: 40px 0;
    }
    
    .main-title {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .sub-title {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .description {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }
    
    .cta-button {
        padding: 16px 24px;
        font-size: 1rem;
        min-height: 52px;
    }
    
    .section {
        padding: 30px 0;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .badge {
        font-size: 0.9rem;
        padding: 6px 10px;
        min-height: 36px;
    }
    
    .problems-list li {
        font-size: 1rem;
        padding: 12px 0 12px 25px;
    }
    
    .solution-text {
        font-size: 1.1rem;
    }
    
    .usp-card {
        padding: 20px 15px;
        margin: 0 2px;
    }
    
    .usp-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
    
    .usp-title {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .usp-card p {
        font-size: 0.9rem;
    }
    
    .benefit-item {
        padding: 20px 15px;
        margin-left: 2px;
        margin-right: 2px;
    }
    
    .benefit-period {
        padding: 10px 16px;
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
    
    .benefit-content h3 {
        font-size: 1.1rem;
    }
    
    .benefit-content p {
        font-size: 0.9rem;
    }
    
    .book-image {
        max-width: 240px;
    }
    
    .author-info h3 {
        font-size: 1.4rem;
    }
    
    .author-info h4 {
        font-size: 1.1rem;
    }
    
    .author-info p {
        font-size: 0.9rem;
    }
    
    .testimonial-card {
        padding: 20px 15px 15px;
        margin: 0 2px;
    }
    
    .testimonial-card::before {
        font-size: 2.5rem;
        top: 3px;
        left: 12px;
    }
    
    .testimonial-text {
        font-size: 0.9rem;
        margin-bottom: 15px;
        margin-top: 8px;
    }
    
    .testimonial-author {
        font-size: 0.8rem;
        padding: 8px 0;
        margin-top: 10px;
        margin-left: -15px;
        margin-right: -15px;
        margin-bottom: -15px;
        text-align: center;
        font-weight: 600;
    }
    
    .testimonial-author::before {
        display: none;
    }
    
    .faq-item {
        margin-left: 2px;
        margin-right: 2px;
    }
    
    .faq-question {
        padding: 15px 12px;
        font-size: 0.95rem;
        min-height: 56px;
    }
    
    .faq-answer {
        padding: 15px 12px;
        font-size: 0.9rem;
    }
    
    .urgency-card {
        padding: 20px 15px;
        margin: 0 2px;
    }
    
    .urgency-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
    
    .urgency-card h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .urgency-card p {
        font-size: 0.9rem;
    }
    
    .university-problems,
    .university-testimonial {
        padding: 25px 15px;
        margin-bottom: 30px;
    }
    
    .university-problems h3,
    .university-solution h3,
    .university-testimonial h3 {
        font-size: 1.2rem;
        margin-bottom: 18px;
    }
    
    .university-problems-list li {
        font-size: 0.95rem;
        padding: 8px 0;
    }
    
    .university-benefit {
        padding: 20px 15px;
        margin: 0 2px;
    }
    
    .benefit-icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .university-benefit h4 {
        font-size: 1.05rem;
        margin-bottom: 10px;
    }
    
    .university-benefit p {
        font-size: 0.9rem;
    }
    
    .student-voice {
        padding: 20px 15px;
    }
    
    .student-voice p {
        font-size: 0.95rem;
        margin-bottom: 10px;
    }
    
    .university-cta {
        padding: 30px 12px;
    }
    
    .university-cta-text {
        font-size: 1.1rem;
        margin-bottom: 18px;
    }
    
    .university-cta-button {
        padding: 14px 25px;
        font-size: 0.95rem;
    }
}