* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Courier New', monospace;
    background-color: #FFFFFF;
    color: #303948;
    line-height: 1.6;
    font-size: 14px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    padding-bottom: 20px;
    border-bottom: 1px solid #303948;
}

.logo img {
    filter: contrast(1.2);
}

.navigation {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.navigation a {
    text-decoration: none;
    color: #303948;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 10px;
    border: 1px solid transparent;
}

.navigation a:hover {
    color: #3cbef2;
    background-color: #f8f9fa;
    border: 1px solid #e0e0e0;
}

.hero {
    margin-bottom: 80px;
    text-align: center;
}

.hero h1 {
    font-size: 2.2em;
    margin-bottom: 40px;
    line-height: 1.3;
    font-weight: normal;
    letter-spacing: 2px;
}

.terminal {
    background-color: #303948;
    color: #FFFFFF;
    border-radius: 4px;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #303948;
}

.terminal-header {
    background-color: #2a323d;
    padding: 8px 12px;
    display: flex;
    gap: 6px;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #5a6574;
}

.terminal-content {
    padding: 30px;
    font-family: 'Courier New', monospace;
    line-height: 1.8;
    font-size: 0.95em;
}

.online {
    color: #3cbef2;
    font-weight: bold;
}

.section {
    margin-bottom: 80px;
}

.section h2 {
    font-size: 1.4em;
    margin-bottom: 40px;
    font-weight: normal;
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
    line-height: 1.4;
}

.content-block {
    margin-bottom: 30px;
}

.content-block p {
    margin-bottom: 20px;
    text-align: justify;
    line-height: 1.7;
}

.warning {
    background-color: #fff8f8;
    border: 1px solid #ffcccc;
    padding: 25px;
    margin: 30px 0;
    font-size: 0.9em;
    text-align: center;
    line-height: 1.6;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-top: 30px;
}

.spec-item {
    border: 1px solid #e0e0e0;
    padding: 25px;
    background-color: #fafafa;
}

.spec-label {
    display: block;
    font-weight: bold;
    margin-bottom: 15px;
    color: #3cbef2;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
}

.spec-value {
    line-height: 1.8;
    font-size: 0.95em;
}

.architecture-block, .transaction-block {
    margin-bottom: 40px;
    padding: 30px;
    border: 1px solid #f0f0f0;
    background-color: #fefefe;
}

.architecture-block h3, .transaction-block h3 {
    color: #3cbef2;
    margin-bottom: 20px;
    font-size: 1.1em;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
}

.architecture-block p, .transaction-block p {
    margin-bottom: 18px;
    text-align: justify;
    line-height: 1.7;
}

.architecture-block ul, .transaction-block ul {
    margin: 20px 0;
    padding-left: 30px;
}

.architecture-block li, .transaction-block li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.security-grid {
    display: grid;
    gap: 25px;
}

.protocol {
    display: flex;
    gap: 25px;
    padding: 30px;
    border: 1px solid #e0e0e0;
    background-color: #fafafa;
}

.protocol-number {
    color: #3cbef2;
    font-size: 1.4em;
    font-weight: bold;
    min-width: 45px;
}

.protocol-content h3 {
    margin-bottom: 15px;
    color: #303948;
    font-size: 1.1em;
    line-height: 1.4;
}

.protocol-content p {
    line-height: 1.7;
    text-align: justify;
}

.assessment-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px;
}

.positive, .negative {
    padding: 35px;
}

.positive {
    background-color: #f8fff8;
    border: 1px solid #ccffcc;
}

.negative {
    background-color: #fff8f8;
    border: 1px solid #ffcccc;
}

.positive h3, .negative h3 {
    margin-bottom: 25px;
    color: #303948;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1.1em;
}

.positive ul, .negative ul {
    padding-left: 25px;
}

.positive li, .negative li {
    margin-bottom: 12px;
    line-height: 1.6;
}

.comparison-grid, .tutorial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.comparison-item, .tutorial-item {
    border: 1px solid #e0e0e0;
    padding: 25px;
    background-color: #fefefe;
}

.comparison-item h3, .tutorial-item h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1em;
}

.comparison-item p, .tutorial-item p {
    line-height: 1.6;
    font-size: 0.95em;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    border: 1px solid #e0e0e0;
    padding: 25px;
    background-color: #fefefe;
}

.faq-item h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1em;
    line-height: 1.4;
}

.faq-item p {
    line-height: 1.6;
    font-size: 0.95em;
}

.links-container {
    display: grid;
    gap: 15px;
    margin-bottom: 25px;
}

.link-block {
    background-color: #f8f9fa;
    padding: 20px;
    border: 1px solid #e0e0e0;
    font-family: 'Courier New', monospace;
    word-break: break-all;
    text-align: center;
    transition: all 0.3s ease;
    font-size: 0.9em;
}

.link-block:hover {
    border-color: #3cbef2;
    background-color: #f0faff;
}

.mirror-note {
    text-align: center;
    font-size: 0.85em;
    color: #5a6574;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.footer {
    text-align: center;
    padding-top: 50px;
    border-top: 1px solid #303948;
    color: #5a6574;
    font-size: 0.8em;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        gap: 20px;
    }
    
    .navigation {
        justify-content: center;
    }
    
    .specs-grid, .assessment-grid, .faq-grid, .comparison-grid, .tutorial-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 1.8em;
    }
    
    .protocol {
        flex-direction: column;
        gap: 15px;
    }
    
    .architecture-block, .transaction-block {
        padding: 20px;
    }
    
    .terminal-content {
        padding: 20px;
        font-size: 0.9em;
    }
}