/* Knowledge Base Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

/* Japanese Knowledge Base Styles */
.ja-knowledge {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
}

.ja-knowledge h1,
.ja-knowledge h2,
.ja-knowledge h3 {
    color: #2c3e50;
}

.ja-knowledge h1 {
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ja-knowledge h2 {
    margin-top: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
}

.ja-knowledge code {
    background-color: #f5f5f5;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: monospace;
}

.ja-knowledge pre {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.ja-knowledge .example {
    background-color: #f9f9f9;
    border-left: 4px solid #4CAF50;
    padding: 10px 15px;
    margin: 20px 0;
}

.ja-knowledge .note {
    background-color: #fff8dc;
    border-left: 4px solid #ffeb3b;
    padding: 10px 15px;
    margin: 20px 0;
}

.ja-knowledge table {
    border-collapse: collapse;
    width: 100%;
    margin: 20px 0;
}

.ja-knowledge th,
.ja-knowledge td {
    border: 1px solid #ddd;
    padding: 8px 12px;
    text-align: left;
}

.ja-knowledge th {
    background-color: #f2f2f2;
}

/* Topic List Styles */
.topic-list {
    list-style-type: none;
    padding: 0;
}
.topic-list li {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 5px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.topic-list h3 {
    margin-top: 0;
    color: #2c3e50;
}
.topic-list p {
    margin-bottom: 10px;
}
.topic-list a {
    display: inline-block;
    color: #3498db;
    text-decoration: none;
    font-weight: bold;
}
.topic-list a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

h2 {
    color: #2c3e50;
    margin-top: 30px;
    padding-bottom: 5px;
    border-bottom: 1px solid #ddd;
}

h3 {
    color: #3498db;
    margin-top: 20px;
}

.command-section {
    margin-bottom: 40px;
}

.command-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

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

.command-table th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.command-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.command-table tr:hover {
    background-color: #f1f1f1;
}

code {
    font-family: 'Courier New', Courier, monospace;
    background-color: #f8f8f8;
    padding: 2px 5px;
    border-radius: 3px;
    border: 1px solid #e1e1e1;
    font-size: 0.9em;
}

.example {
    background-color: #f8f8f8;
    padding: 15px;
    border-left: 4px solid #3498db;
    margin: 15px 0;
}

.note {
    background-color: #fff8dc;
    padding: 15px;
    border-left: 4px solid #f0ad4e;
    margin: 15px 0;
}

.navigation-links {
    background-color: #f0f7fc;
    padding: 10px 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    border-left: 4px solid #3498db;
}

.navigation-links a {
    text-decoration: none;
    color: #3498db;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background-color 0.3s;
}

.navigation-links a:hover {
    background-color: #e1e1e1;
}

.category-nav, .command-nav {
    background-color: #f8f8f8;
    padding: 15px;
    margin-bottom: 30px;
    border-radius: 5px;
}

.category-nav ul, .command-nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
}

.category-nav li, .command-nav li {
    margin-right: 15px;
    margin-bottom: 10px;
}

.category-nav a, .command-nav a {
    text-decoration: none;
    color: #3498db;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background-color 0.3s;
}

.category-nav a:hover, .command-nav a:hover {
    background-color: #e1e1e1;
}

.command-nav {
    margin-top: 10px;
    margin-bottom: 20px;
    background-color: #f0f7fc;
    border-left: 4px solid #3498db;
}

#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s;
}

#back-to-top:hover {
    opacity: 1;
}

/* Styles from block_chain.html */
.crypto-section {
    margin-bottom: 40px;
}
.crypto-subsection {
    margin-bottom: 30px;
}
.crypto-diagram {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
}
.diagram-container {
    text-align: center;
    margin: 20px 0;
}
.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 20px 0;
}
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}
.comparison-table th {
    background-color: #3498db;
    color: white;
}
.comparison-table td:first-child {
    background-color: #f2f2f2;
    font-weight: 500;
}
.multi-column-list {
    column-count: 2;
    column-gap: 30px;
    margin: 15px 0;
}
.multi-column-list-3 {
    column-count: 3;
    column-gap: 30px;
    margin: 15px 0;
}
.multi-column-list li,
.multi-column-list-3 li {
    break-inside: avoid-column;
    margin-bottom: 10px;
}
.two-column-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin: 20px 0;
}
.column {
    flex: 1 1 45%;
    min-width: 250px;
}

/* Styles from fintech.html */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.service-card {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    background-color: #f9f9f9;
    transition: transform 0.2s, box-shadow 0.2s;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.service-card h3 {
    margin-top: 0;
    color: #000000;
}
.service-card h3 a {
    color: #1a73e8;
}
.service-card p {
    color: #5f6368;
    margin-bottom: 10px;
}
.service-category {
    margin-top: 30px;
}

/* Styles from smart_contract.html */
.comparison {
    display: flex;
    justify-content: space-between;
    margin: 20px 0;
}
.comparison-column {
    flex: 1;
    padding: 15px;
    border: 1px solid #ddd;
    margin: 0 10px;
}
.comparison-column:first-child {
    margin-left: 0;
}
.comparison-column:last-child {
    margin-right: 0;
}
.comparison-header {
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid #ddd;
}
.image-container {
    text-align: center;
    margin: 20px 0;
}
.image-container img {
    max-width: 100%;
    height: auto;
}
.code-example {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: monospace;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .command-table th, .command-table td {
        padding: 8px;
    }

    .category-nav ul {
        flex-direction: column;
    }

    .category-nav li {
        margin-right: 0;
    }

    .multi-column-list,
    .multi-column-list-3 {
        column-count: 1;
    }
    .two-column-content {
        flex-direction: column;
    }
    .column {
        width: 100%;
        margin-bottom: 20px;
    }
}