/* ガイドページ共通スタイル */

/* メインセクション */
#file-size-guide,
#ppap-solution,
#business-use {
    background: #fff;
    padding: 60px 0;
}

.guide-section {
    width: 100%;
}

.wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* セクションタイトル */
.sec-title {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 25px;
    border-bottom: 3px solid #3498db;
}

.sec-title span {
    font-size: 1em;
}

.sec-title p {
    font-size: 16px;
    color: #7f8c8d;
    margin-top: 10px;
    line-height: 1.6;
}

/* コンテナ */
.guide-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* ページタイトル */
.guide-header {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 3px solid #3498db;
}

.guide-header h1 {
    font-size: 1.8em;
    color: #2c3e50;
    margin-bottom: 15px;
    font-weight: 700;
}

.guide-header p {
    font-size: 1em;
    color: #7f8c8d;
    line-height: 1.6;
}

/* コンテンツエリア */
.explanation-content,
.ppap-content {
    width: 100%;
}

/* コンテンツボックス */
.guide-box,
.explanation-box,
.business-notice {
    background: #fff;
    border-radius: 8px;
    padding: 35px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.explanation-box h4 {
    font-size: 1.2em !important;
    color: #2c3e50 !important;
    margin-bottom: 15px !important;
    font-weight: 600 !important;
}

.explanation-box h5 {
    font-size: 1.05em !important;
    color: #34495e !important;
    margin-top: 20px !important;
    margin-bottom: 10px !important;
    font-weight: 600 !important;
}

.explanation-box p {
    line-height: 1.7 !important;
    color: #555 !important;
    margin-bottom: 12px !important;
    font-size: 0.95em !important;
}

.explanation-box ul {
    line-height: 1.8 !important;
    color: #555 !important;
    margin-bottom: 15px !important;
    padding-left: 25px !important;
}

.explanation-box ul li {
    margin-bottom: 10px !important;
}

.explanation-box table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    overflow: hidden;
}

.explanation-box table thead tr {
    background-color: #3498db !important;
    color: #fff !important;
}

.explanation-box table th {
    padding: 15px !important;
    text-align: left !important;
    font-weight: 600 !important;
    border: none !important;
}

.explanation-box table td {
    padding: 15px !important;
    border-bottom: 1px solid #ecf0f1 !important;
    color: #555 !important;
}

.explanation-box table tbody tr:nth-child(even) {
    background-color: #f8f9fa !important;
}

.explanation-box table tbody tr:last-child td {
    border-bottom: none !important;
}

.explanation-box table tbody tr:hover {
    background-color: #e8f4f8 !important;
}

/* 特別な背景色のボックス */
.explanation-box[style*="background-color: #e8f5e9"] {
    background-color: #e8f5e9 !important;
    border-left-color: #4caf50 !important;
}

.guide-box h3 {
    font-size: 1.3em;
    color: #2c3e50;
    margin-bottom: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.guide-box h4 {
    font-size: 1.1em;
    color: #34495e;
    margin-top: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.guide-box h5 {
    font-size: 1.1em;
    color: #555;
    margin-top: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.guide-box p {
    line-height: 1.7;
    color: #555;
    margin-bottom: 12px;
    font-size: 0.95em;
}

.guide-box ul {
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
    padding-left: 25px;
}

.guide-box ul li {
    margin-bottom: 10px;
}

.guide-box ol {
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
    padding-left: 25px;
}

.guide-box ol li {
    margin-bottom: 10px;
}

/* アラートボックス */
.alert-box {
    padding: 20px 25px;
    border-radius: 8px;
    margin: 25px 0;
    border: 1px solid #ddd;
}

.alert-box.info {
    background-color: #f5f7fa;
    border-color: #6c757d;
    color: #495057;
}

.alert-box.warning {
    background-color: #f8f9fa;
    border-color: #6c757d;
    color: #495057;
}

.alert-box.danger {
    background-color: #f5f5f5;
    border-color: #6c757d;
    color: #495057;
}

.alert-box.success {
    background-color: #f5f7fa;
    border-color: #6c757d;
    color: #495057;
}

.alert-box p {
    margin: 0;
    line-height: 1.8;
}

.alert-box ul {
    margin: 10px 0 0 0;
    padding-left: 20px;
}

/* テーブル */
.guide-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.guide-table thead tr {
    background-color: #3498db;
    color: #fff;
}

.guide-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 1em;
}

.guide-table td {
    padding: 15px;
    border-bottom: 1px solid #ecf0f1;
    color: #555;
}

.guide-table tbody tr:last-child td {
    border-bottom: none;
}

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

.guide-table tbody tr:hover {
    background-color: #e8f4f8;
}

/* テーブル横スクロールラッパー */
.table-scroll-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-scroll-hint {
    display: none;
}

@media (max-width: 768px) {
    .table-scroll-hint {
        display: block;
        text-align: center;
        font-size: 0.8em;
        color: #888;
        margin-bottom: 6px;
    }
}

/* 比較テーブル */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.comparison-table th {
    padding: 15px;
    text-align: center;
    font-weight: 600;
    background-color: #2c3e50;
    color: #fff;
}

.comparison-table td {
    padding: 15px;
    border: 1px solid #ddd;
    text-align: center;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 600;
    background-color: #f8f9fa;
}

.comparison-table .positive {
    background-color: #e8f5e9;
    color: #2e7d32;
    font-weight: 600;
}

.comparison-table .negative {
    background-color: #ffebee;
    color: #c62828;
    font-weight: 600;
}

.comparison-table .neutral {
    background-color: #fff3cd;
    color: #856404;
    font-weight: 600;
}

/* ステップボックス */
.step-box {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.step-box h5 {
    color: #2e7d32;
    font-size: 1.3em;
    margin-bottom: 15px;
    font-weight: 600;
}

.step-box ul {
    line-height: 1.8;
    color: #555;
    margin-bottom: 10px;
}

.step-box .step-tip {
    margin-top: 15px;
    padding: 12px;
    background-color: #e8f5e9;
    border-radius: 6px;
    color: #2e7d32;
}

/* FAQセクション */
.faq-item {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ecf0f1;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h5 {
    color: #2c3e50;
    font-size: 1.2em;
    margin-bottom: 12px;
    font-weight: 600;
}

.faq-item p {
    color: #555;
    line-height: 1.8;
    padding-left: 20px;
}

/* CTAボックス */
.cta-box {
    background: #495057;
    color: #fff;
    padding: 50px 40px;
    border-radius: 8px;
    text-align: center;
    margin: 50px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.cta-box h3,
.cta-box h4,
.cta-box p,
.cta-box span,
.cta-box strong,
.cta-box li,
.cta-box div {
    color: #fff !important;
}

.cta-box h4 {
    color: #2c3e50 !important;
    background: #fff !important;
    padding: 10px 18px !important;
    border-radius: 6px !important;
    display: inline-block !important;
    margin-bottom: 20px !important;
}

.cta-note {
    margin-top: 20px !important;
}

.cta-box h3,
.cta-box h4 {
    font-size: 1.4em;
    margin-bottom: 15px;
    font-weight: 600;
}

.cta-box p {
    font-size: 0.95em;
    line-height: 1.6;
    margin-bottom: 20px;
}

.cta-box .btn {
    background: #fff;
    color: #495057;
    padding: 12px 40px;
    font-size: 1em;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: none;
}

.cta-box .btn:hover {
    background: #f8f9fa;
    color: #495057;
}

/* 特徴リスト */
.feature-list {
    display: block;
    margin: 30px 0;
}

.feature-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #ddd;
    margin-bottom: 25px;
}

.feature-item strong {
    display: block;
    color: #2c3e50;
    font-size: 1.1em;
    margin-bottom: 10px;
}

.feature-item p {
    color: #555;
    line-height: 1.7;
    margin: 0;
}

/* 問題点リスト */
.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.problem-item .problem-icon {
    font-size: 1.6em;
    flex-shrink: 0;
    margin-top: 2px;
}

.problem-item .problem-body {
    flex: 1;
    min-width: 0;
}

.problem-item .problem-image {
    flex-shrink: 0;
    width: 420px;
    border-radius: 8px;
    overflow: hidden;
    background: #f5f5f5;
    border: 2px solid #d0d0d0;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.06);
}

.problem-item .problem-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.problem-item .icon {
    font-size: 2em;
    flex-shrink: 0;
}

.problem-item strong {
    display: block;
    font-size: 1.2em;
    color: #c62828;
    margin-bottom: 10px;
}

.problem-item p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 8px;
}

/* 解決策リスト */
.solution-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.solution-item .solution-icon {
    font-size: 1.6em;
    flex-shrink: 0;
    margin-top: 2px;
    margin-left: 10px;
}

.solution-item .solution-body {
    flex: 1;
    min-width: 0;
}

.solution-item .solution-image {
    flex-shrink: 0;
    width: 420px;
    margin-right: 20px;
    border-radius: 8px;
    overflow: hidden;
    background: #f5f5f5;
    border: 2px solid #d0d0d0;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.06);
}

.solution-item .solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.solution-item .solution-title {
    display: block;
    font-size: 1.2em;
    color: #27ae60;
    margin-bottom: 10px;
}

.solution-item .solution-body p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 8px;
}

.solution-item .solution-body ul {
    margin: 10px 0;
    padding-left: 20px;
    color: #555;
}

/* PPAP専用スタイル */
.ppap-problems {
    margin: 40px 0;
}

.ppap-problems h4 {
    font-size: 1.8em;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
    font-weight: 700;
}

.problem-items,
.solution-items {
    margin: 20px 0;
}

.ppap-solution {
    margin: 60px 0 40px 0;
}

.ppap-solution h3 {
    font-size: 2em;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 700;
}

.ppap-solution > p {
    text-align: center;
    font-size: 1.1em;
    line-height: 1.8;
    margin-bottom: 40px;
    color: #555;
}

.ppap-cta {
    margin: 50px 0;
}

.ppap-cta-box {
    background: #495057;
    color: #fff;
    padding: 50px 40px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.ppap-cta-box h4 {
    font-size: 2em;
    margin-bottom: 20px;
    color: #fff !important;
    font-weight: 700;
}

.ppap-cta-box p {
    font-size: 1.1em;
    line-height: 1.8;
    margin-bottom: 30px;
    color: #fff !important;
}

.ppap-cta-box strong {
    color: #fff300;
    font-weight: 700;
}

.ppap-cta-box .btn {
    background: #fff;
    color: #495057;
    padding: 15px 50px;
    font-size: 1.2em;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: none;
}

.ppap-cta-box .btn:hover {
    background: #f8f9fa;
    color: #495057;
}

/* ビジネス利用ポリシーページ */
.business-notice h3 {
    color: #0056b3;
    font-size: 1.8em;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 700;
}

.business-notice > p {
    font-size: 1.1em;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

/* Features ページ用スタイル */
.use-cases-section {
    background: #fff;
    padding: 40px 0;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.use-case-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #ddd;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.use-case-icon {
    font-size: 3em;
    margin-bottom: 0;
    margin-right: 15px;
    flex-shrink: 0;
}

.use-case-card h3 {
    font-size: 1.3em;
    color: #2c3e50;
    margin-bottom: 0;
    margin-top: 10px;
    margin-left: -10px;
    font-weight: 600;
    flex: 1;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.use-case-card p {
    line-height: 1.8;
    color: #555;
    flex-basis: 100%;
    margin-top: 15px;
}

.use-case-image-placeholder {
    margin-top: 20px;
    background: #e9ecef;
    height: 150px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
}

.use-case-image-placeholder img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.feature-image-section {
    padding: 40px 0;
    background: #fff;
}

.feature-main-image {
    text-align: center;
}

.feature-main-image img {
    width: 100%;
    max-width: 700px;
    height: auto;
    border-radius: 8px;
}



.note-text {
    font-size: 0.9em;
    color: #666;
}

.guide-image-wrap {
    margin: 20px 0;
    text-align: center;
}

.guide-infographic {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

/* Differentiation section */
.differentiation-section {
    background: linear-gradient(135deg, #C0432F 0%, #8B3024 100%);
    padding: 80px 0;
    color: #fff;
}

.differentiation-section .sec-title {
    border-bottom-color: rgba(255,255,255,0.3);
}

.differentiation-section .sec-title h2 {
    color: #fff;
}

.differentiation-section .sec-title p {
    color: rgba(255,255,255,0.9);
}

.differentiation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.differentiation-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 12px;
    border: 2px solid rgba(255,255,255,0.2);
}

.differentiation-card .card-icon {
    font-size: 4em;
    display: inline-block;
    vertical-align: middle;
    margin-right: 15px;
    margin-bottom: 0;
    flex-shrink: 0;
}

.differentiation-card h3 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: #fff;
    display: inline-block;
    vertical-align: middle;
    max-width: calc(100% - 5em);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.differentiation-card p {
    font-size: 1.1em;
    line-height: 1.8;
    color: rgba(255,255,255,0.9);
    display: block;
    margin-top: 15px;
}

.differentiation-card .highlight {
    color: #FFD700;
}

.differentiation-alert {
    background: rgba(255,255,255,0.95);
    color: #333;
    margin-top: 50px;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.differentiation-alert p {
    font-size: 1.1em;
    line-height: 1.8;
    margin: 0;
}

.differentiation-alert .alert-title {
    color: #C0432F;
    font-size: 1.2em;
}

.differentiation-alert .alert-highlight {
    color: #C0432F;
}

/* Benefits section */
.benefits-section {
    background: #fff;
    padding: 40px 0;
}

.benefits-list {
    display: block;
    margin: 40px 0;
}

.benefit-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #ddd;
    margin-bottom: 25px;
}

.benefit-content {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.benefit-text {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    flex: 1;
}

.benefit-description {
    flex: 1;
}

.benefit-description .benefit-icon {
    font-size: 3em;
    display: inline-block;
    vertical-align: middle;
    margin-right: 15px;
    margin-bottom: 0px;
}

.benefit-description h3 {
    font-size: 1.3em;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
    display: inline-block;
    vertical-align: middle;
}

.benefit-description p {
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

.benefit-image-placeholder {
    flex: 0 0 500px;
    min-height: 400px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
}

.benefit-image-placeholder img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.benefit-image-placeholder img.img-smartphone-capture {
    max-height: 400px;
    width: auto;
}

.benefit-comparison {
    margin-top: 20px;
}

.benefit-comparison table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.benefit-comparison table th,
.benefit-comparison table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid #ddd;
}

.benefit-comparison table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

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

.benefit-comparison table tbody tr:hover {
    background-color: #e9ecef;
}

.time-comparison {
    margin: 30px 0;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.comparison-ppap,
.comparison-file2u {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.comparison-total {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    text-align: center;
}

.time-savings {
    background: #e8f5e9;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    margin-top: 20px;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 30px 0;
}

.btn-secondary {
    background: #6c757d !important;
    border-color: #6c757d !important;
    color: #fff !important;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #5a6268 !important;
    border-color: #5a6268 !important;
}

/* Flow section styles (共通) */
.flow-section {
    background: #f8f9fa;
    padding: 80px 0;
}

.flow-steps-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
}

.flow-steps {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 40px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.flow-step {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #ddd;
    flex: 1;
    min-width: 200px;
    text-align: center;
}

.step-number {
    top: -20px;
    font-size: 2em;
    font-weight: 700;
    margin-bottom: 10px;
    width: 50px;
    height: 50px;
}

.step-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.flow-arrow {
    font-size: 2em;
    color: #3498db;
    margin: 0 15px;
    flex-shrink: 0;
}

.flow-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

/* グローバルタイポグラフィ調整 */
.explanation-box strong,
.guide-box strong {
    color: #2c3e50;
    font-weight: 600;
}

.explanation-box em,
.guide-box em {
    font-style: italic;
    color: #7f8c8d;
}

/* ボタンスタイル */
.btn-primary {
    background: #3498db !important;
    border-color: #3498db !important;
    color: #fff !important;
    transition: all 0.3s ease !important;
}

.btn-primary:hover {
    background: #2980b9 !important;
    border-color: #2980b9 !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4) !important;
}

.btn-lg {
    padding: 15px 40px !important;
    font-size: 1.1em !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
}

/* 共通ボックススタイル */
.info-box {
    background: #f0f6ff;
    border: 2px solid #3498db;
    border-radius: 10px;
    padding: 24px 28px;
    margin: 24px 0;
    box-shadow: 0 3px 10px rgba(52, 152, 219, 0.1);
}

.info-box h3 {
    color: #1a5276;
    font-size: 1.3em;
    font-weight: 700;
    margin-bottom: 16px;
}

.info-box h4 {
    color: #1a5276;
    margin-bottom: 14px;
    font-size: 1.15em;
    font-weight: 700;
    padding: 8px 14px;
    background: #d6eaf8;
    border-radius: 6px;
}

.info-box h5 {
    color: #2471a3;
    margin-top: 18px;
    margin-bottom: 8px;
    font-size: 0.98em;
    font-weight: 700;
}

.info-box p {
    color: #333;
    line-height: 1.8;
    margin-bottom: 10px;
    font-size: 0.95em;
}

.info-box ul {
    color: #333;
    line-height: 1.8;
    margin-bottom: 10px;
    padding-left: 20px;
}

.info-box ul li {
    margin-bottom: 6px;
}

.info-box-white {
    background: #fff;
    border: 2px solid #27ae60;
    border-radius: 10px;
    padding: 24px 28px;
    margin: 24px 0;
    box-shadow: 0 3px 10px rgba(39, 174, 96, 0.1);
}

.info-box-white h4 {
    color: #1e8449;
    font-size: 1.15em;
    font-weight: 700;
    margin-bottom: 14px;
    padding: 8px 14px;
    background: #d5f5e3;
    border-radius: 6px;
}

.info-box-white h5 {
    color: #1e8449;
    margin-top: 18px;
    margin-bottom: 8px;
    font-size: 0.98em;
    font-weight: 700;
}

.info-box-white p {
    color: #333;
    line-height: 1.8;
    margin-bottom: 10px;
    font-size: 0.95em;
}

.info-box-white ul {
    color: #333;
    line-height: 1.8;
    margin-bottom: 10px;
    padding-left: 20px;
}

.info-box-white ul li {
    margin-bottom: 6px;
}

.note-box {
    background: #eaf4fd;
    padding: 14px 18px;
    border: 1px solid #aed6f1;
    border-radius: 6px;
    margin: 15px 0;
}

.note-box p {
    color: #1a5276;
    margin: 0;
    line-height: 1.6;
    font-size: 0.9em;
}

/* テーブルスタイル統一 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.data-table thead tr {
    background-color: #f5f5f5;
}

.data-table th {
    padding: 10px 12px;
    text-align: left;
    border: 1px solid #ddd;
    font-size: 0.9em;
    font-weight: 600;
}

.data-table td {
    padding: 10px 12px;
    border: 1px solid #ddd;
    font-size: 0.9em;
}

.data-table tbody tr:nth-child(even) {
    background-color: #fafafa;
}

/* =========================================
   PPAP詳細セクション用スタイル
   ========================================= */

/* 歴史・背景ボックス */
.history-box {
    background: #f0f4f8;
    border-left: 4px solid #3498db;
    border-radius: 0 8px 8px 0;
    padding: 30px 35px;
    margin: 30px 0;
}

.history-box h4.section-heading {
    color: #2c3e50;
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #c5d8ea;
}

.history-box h5 {
    color: #2c3e50;
    font-size: 1.1em;
    font-weight: 700;
    margin: 20px 0 12px;
}

.history-box ul {
    padding-left: 20px;
    line-height: 1.9;
    color: #444;
    margin-bottom: 15px;
}

/* 警告ボックス */
.warning-box {
    background: #fff8e1;
    border-left: 4px solid #ffc107;
    border-radius: 0 6px 6px 0;
    padding: 18px 22px;
    margin: 15px 0;
}

.warning-box ul {
    padding-left: 20px;
    line-height: 1.9;
    color: #444;
    margin: 0;
}

/* 危険強調テキスト */
.danger-text {
    color: #c0392b;
    margin-top: 18px;
}

/* 事例ボックス */
.case-study-box {
    background: #fff5f5;
    border-left: 4px solid #e74c3c;
    border-radius: 0 8px 8px 0;
    padding: 30px 35px;
    margin: 30px 0;
}

.case-study-box h4.section-heading {
    color: #c0392b;
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #f5c6cb;
}

.case-item {
    background: #fff;
    border-radius: 6px;
    border: 1px solid #f5c6cb;
    padding: 20px 25px;
    margin-bottom: 20px;
}

.case-item:last-of-type {
    margin-bottom: 0;
}

.danger-heading {
    color: #c0392b;
    font-size: 1.05em;
    font-weight: 700;
    margin-bottom: 10px;
}

.danger-impact {
    display: inline-block;
    background: #fdecea;
    color: #c0392b;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 4px;
    margin-top: 8px;
    font-size: 0.95em;
}

/* 移行イメージ */
.migration-image-wrap {
    text-align: center;
    margin: 24px 0 32px;
}

.migration-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* 移行ガイド */
.migration-guide {
    background: #f0faf4;
    border-left: 4px solid #27ae60;
    border-radius: 0 8px 8px 0;
    padding: 30px 35px;
    margin: 30px 0;
}

.migration-guide h4.solution-heading {
    color: #1e8449;
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 10px;
}

.migration-guide > p {
    color: #555;
    margin-bottom: 25px;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.step-heading {
    color: #2e7d32;
    font-size: 1.1em;
    font-weight: 700;
}

.time-summary {
    background: #e8f5e9;
    border-radius: 6px;
    padding: 18px 22px;
    margin-top: 25px;
    text-align: center;
}

.time-summary p {
    margin: 0;
    color: #2e7d32;
    line-height: 1.7;
}

.time-summary p + p {
    margin-top: 8px;
    color: #555;
}

/* FAQボックス */
.faq-box {
    background: #fff;
    border-radius: 8px;
    padding: 30px 35px;
    margin: 30px 0;
    border: 1px solid #e0e0e0;
}

.faq-box h4.section-heading {
    color: #2c3e50;
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
}

.faq-answer {
    color: #555;
    line-height: 1.8;
    padding-left: 20px;
}

/* 共通セクション見出し */
.section-heading {
    color: #2c3e50;
    font-weight: 700;
    margin-bottom: 20px;
}

.solution-heading {
    color: #1e8449;
    font-weight: 700;
    margin-bottom: 15px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    #file-size-guide,
    #ppap-solution,
    #business-use {
        padding: 30px 0;
    }

    .wrapper {
        padding: 0 15px;
    }

    .sec-title span {
        font-size: 1.6em;
    }

    .sec-title p {
        font-size: 1em;
    }

    .guide-container {
        padding: 20px 15px;
    }

    .guide-header h1 {
        font-size: 1.8em;
    }

    .guide-header p {
        font-size: 1em;
    }

    .guide-box,
    .explanation-box,
    .business-notice {
        padding: 20px;
    }

    .guide-box h3,
    .explanation-box h4 {
        font-size: 1.3em !important;
    }

    .guide-box h4,
    .explanation-box h5 {
        font-size: 1.1em !important;
    }

    .guide-table,
    .explanation-box table {
        font-size: 0.85em;
    }

    .guide-table th,
    .guide-table td,
    .explanation-box table th,
    .explanation-box table td {
        padding: 10px !important;
    }

    .comparison-table {
        font-size: 0.8em;
    }

    .cta-box,
    .ppap-cta-box {
        padding: 30px 20px;
    }

    .cta-box h3,
    .ppap-cta-box h4 {
        font-size: 1.5em !important;
    }

    .cta-box p,
    .ppap-cta-box p {
        font-size: 1em !important;
    }

    .feature-list {
        display: block;
    }

    .problem-item,
    .solution-item {
        flex-direction: column;
        padding: 15px;
    }

    .problem-item .problem-image,
    .solution-item .solution-image {
        width: 100%;
    }

    .step-box {
        padding: 20px;
    }

    .btn-lg {
        padding: 12px 30px !important;
        font-size: 1em !important;
    }

    .history-box,
    .case-study-box,
    .migration-guide,
    .faq-box {
        padding: 20px;
    }

    .history-box h4.section-heading,
    .case-study-box h4.section-heading,
    .faq-box h4.section-heading {
        font-size: 1.3em;
    }

    .migration-guide h4.solution-heading {
        font-size: 1.4em;
    }

    .steps-container {
        grid-template-columns: 1fr;
    }

    .case-item {
        padding: 15px;
    }

    .benefit-text {
        flex-direction: column;
    }

    .benefit-image-placeholder {
        flex: none;
        width: 100%;
        min-height: auto;
    }
}