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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #FFFFFF;
    color: #17191b;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid #313c48;
}

.logo img {
    filter: brightness(0.9);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
}

.pulse {
    width: 12px;
    height: 12px;
    background-color: #00ff00;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.hero {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px 0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, #17191b, #313c48);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.3rem;
    color: #313c48;
    margin-bottom: 25px;
}

.hero-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 25px;
}

.hero-features span {
    background: #f8f9fa;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.8rem;
    color: #17191b;
}

.security-badge {
    background-color: #17191b;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
}

.security-notice-box {
    background: #e3f2fd;
    border: 1px solid #bbdefb;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
}

.security-notice-box h3 {
    color: #1565c0;
    margin-bottom: 10px;
}

.security-notice-box p {
    color: #424242;
    line-height: 1.6;
}

.links-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.link-card {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.link-card:hover {
    border-color: #313c48;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(49, 60, 72, 0.1);
}

.link-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.mirror-badge {
    background-color: #17191b;
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 10px;
}

.status.online {
    background-color: #d4edda;
    color: #155724;
}

.link-url {
    font-family: monospace;
    background-color: #e9ecef;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    word-break: break-all;
    font-size: 0.9rem;
}

.copy-btn {
    width: 100%;
    padding: 10px;
    background-color: #17191b;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background-color: #313c48;
}

.validator-section {
    margin-bottom: 50px;
    padding: 40px 0;
    background: #f8f9fa;
    border-radius: 15px;
}

.validator-section h2 {
    text-align: center;
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.validator-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 30px;
    color: #666;
}

.validator-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

#linkInput {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 15px;
    transition: border-color 0.3s ease;
}

#linkInput:focus {
    outline: none;
    border-color: #313c48;
}

.validator-container button {
    padding: 15px 30px;
    background-color: #17191b;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.validator-container button:hover {
    background-color: #313c48;
}

#validationResult {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
    display: none;
}

.marketplace-overview {
    margin-bottom: 50px;
    padding: 40px 0;
}

.marketplace-overview h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.overview-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.overview-text h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #17191b;
}

.overview-text h4 {
    font-size: 1.2rem;
    margin: 25px 0 15px;
    color: #313c48;
}

.overview-text p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.overview-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 25px 15px;
    background: #f8f9fa;
    border-radius: 12px;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #17191b;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
    font-weight: 600;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: #17191b;
    font-size: 1.2rem;
}

.feature-card p {
    color: #313c48;
    font-size: 0.95rem;
    line-height: 1.6;
}

.technology-section {
    margin-bottom: 50px;
    padding: 40px 0;
    background: #f8f9fa;
    border-radius: 15px;
}

.technology-section h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.tech-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.tech-item {
    padding: 25px;
}

.tech-item h3 {
    margin-bottom: 15px;
    color: #17191b;
    font-size: 1.3rem;
}

.tech-item p {
    line-height: 1.7;
    color: #424242;
}

.security-protocols {
    margin-bottom: 50px;
}

.security-protocols h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.protocols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.protocol-card {
    padding: 25px;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #313c48;
}

.protocol-card h4 {
    margin-bottom: 12px;
    color: #17191b;
}

.protocol-card p {
    color: #424242;
    line-height: 1.6;
}

.info-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.info-card {
    padding: 30px 25px;
    background: #f8f9fa;
    border-radius: 12px;
    text-align: center;
}

.info-card.accent {
    background: #17191b;
    color: white;
}

.info-card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.info-card p {
    line-height: 1.6;
}

.access-guide {
    margin-bottom: 50px;
    padding: 40px 0;
}

.access-guide h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
    padding: 25px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #17191b;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h4 {
    margin-bottom: 15px;
    color: #17191b;
}

.step p {
    color: #424242;
    line-height: 1.6;
}

footer {
    padding-top: 50px;
    border-top: 2px solid #e9ecef;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h4 {
    margin-bottom: 15px;
    color: #17191b;
}

.footer-section p {
    color: #666;
    line-height: 1.6;
}

.security-notice {
    background-color: #fff3cd;
    color: #856404;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.copyright {
    color: #313c48;
    font-size: 0.9rem;
    text-align: center;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .links-container {
        grid-template-columns: 1fr;
    }
    
    .overview-content {
        grid-template-columns: 1fr;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
}