@charset "UTF-8";
/* responsive.css - レスポンシブ対応スタイル */

/* タブレットサイズ */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }

    .summary-content,
    .product-intro-content,
    .checklist-intro .container {
        flex-direction: column;
    }

    .summary-image,
    .product-image,
    .checklist-image {
        margin-bottom: 30px;
    }

    .key-achievements {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 30px;
    }

    /* チャプターページ */
    .chapter-hero h1 {
        font-size: 2.5rem;
    }

    .section-content {
        flex-direction: column;
    }

    .section-content.reverse {
        flex-direction: column;
    }

    .chapter-image-box,
    .section-text {
        width: 100%;
    }

    .step-number {
        width: 60px;
        height: 60px;
    }

    .chapter-images-grid {
        grid-template-columns: 1fr;
    }

    /* チェックリストページ */
    .checklist-hero .container {
        flex-direction: column;
    }

    .checklist-hero-content,
    .checklist-hero-image {
        max-width: 100%;
    }

    .checklist-hero-content h1 {
        font-size: 2.3rem;
    }

    .download-form-wrapper {
        flex-direction: column;
    }
}

/* スマートフォンサイズ - 中 */
@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: white;
        padding: 70px 20px 20px;
        z-index: 1000;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 10px;
    }

    .main-nav a {
        display: block;
        padding: 15px;
        font-size: 1.2rem;
    }

    .menu-toggle {
        display: block;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -8px);
    }

    .hero {
        height: 80vh;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .chapter-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    .footer-links {
        flex-direction: column;
        gap: 30px;
    }

    /* チャプターページ */
    .chapter-hero {
        height: 50vh;
    }

    .chapter-hero h1 {
        font-size: 2rem;
    }

    .chapter-subtitle {
        font-size: 1.1rem;
    }

    .chapter-nav-items {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .chapter-nav-divider {
        display: none;
    }

    .chapter-summary h2 {
        font-size: 1.8rem;
    }

    .chapter-summary p {
        font-size: 1.1rem;
    }

    .process-step {
        flex-direction: column;
    }

    .step-number {
        margin-bottom: 15px;
    }

    /* データビジュアライゼーション調整 */
    .data-visualization {
        padding: 25px 20px;
    }

    .data-visualization h3 {
        font-size: 1.3rem;
    }

    .data-visualization .feature-list li {
        margin-bottom: 1.2rem;
    }

    .data-visualization .feature-list li i {
        margin-top: 0.2rem;
    }

    /* 章セクション調整 */
    .chapter-section {
        padding: 3rem 0;
    }

    .section-content {
        margin: 1.5rem 0;
    }

    /* 見出し調整 */
    .chapter-section .section-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .chapter-section h3 {
        font-size: 1.3rem;
        margin: 1.8rem 0 1rem;
    }

    /* 引用ボックス調整 */
    .quote-box {
        padding: 20px 15px;
    }

    .quote-box blockquote {
        font-size: 1.05rem;
        padding: 0 15px;
    }

    /* チェックリストページ */
    .checklist-grid {
        grid-template-columns: 1fr;
    }

    .checklist-hero-content h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .hero-tagline {
        flex-direction: column;
    }

    .hero-tagline i:first-child {
        align-self: flex-start;
    }

    .hero-tagline i:last-child {
        align-self: flex-end;
    }

    /* 問い合わせページ */
    .contact-hero-content h1 {
        font-size: 2rem;
    }

    .contact-hero .subtitle {
        font-size: 1.1rem;
    }

    .tab-list {
        flex-direction: column;
    }

    .tab-button {
        padding: 15px;
    }

    .tab-button.active::after {
        display: none;
    }

    .tab-content {
        padding: 20px;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .faq-question h3 {
        font-size: 1rem;
    }
}

/* スマートフォンサイズ - 小 */
@media (max-width: 480px) {
    .hero-highlights {
        flex-direction: column;
        gap: 10px;
    }

    .hero-content {
        padding: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .product-info h2,
    .checklist-content h2 {
        font-size: 1.8rem;
    }

    .product-cta {
        flex-direction: column;
    }
}