.site-header {
    background-color: #ffffff;
    padding: 20px 0;
    margin-bottom: 32px;
}
.site-title {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 48px;
    margin: 0 0 12px 0;
    text-align: center;
}
.site-title a {
    color: #000000;
    text-decoration: none;
    border-bottom: none !important;
}
.site-title a:hover {
    color: #333;
    border-bottom: none !important;
}
.contact-info {
    text-align: center;
    margin-bottom: 20px;
}
.contact-info p {
    margin: 4px 0;
    font-size: 18px;
    font-family: 'JetBrains Mono', monospace !important;
    font-weight: 600 !important;
}
.header-social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 16px;
}
.header-social-icons .social-icon {
    width: 32px;
    height: 32px;
    transition: all 0.2s ease;
}
.header-social-icons a {
    border-bottom: none !important;
    padding: 8px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.header-social-icons a:hover {
    background: #f8f9fa;
    border-bottom: none !important;
}
.header-social-icons a:hover .social-icon {
    transform: scale(1.1);
}
.main-content {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 15px;
}
h1, h2, h3 {
    font-weight: 600;
}
h1 {
    text-align: center;
    margin-bottom: 12px;
    font-size: 32px;
}
h3 {
    text-align: center;
    margin-bottom: 12px;
    font-size: 24px;
}
.page-header {
    text-align: center;
    margin-bottom: 32px;
}
.topic-decoration {
    height: 12px;
    width: 100%;
    margin: 12px 0 0 0;
    border-radius: 6px;
}
p, li {
    font-size: 20px;
    line-height: 1.6;
}
.topic-content {
    margin-bottom: 32px;
}
.topic-decoration-bottom {
    height: 12px;
    width: 100%;
    margin: 32px 0 0 0;
    border-radius: 6px;
}
.back-home-section {
    text-align: center;
    margin: 20px 0;
    font-size: 16px;
}
.contact-section {
    text-align: center;
    margin-top: 32px;
}
.contact-section h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: #666;
}
.social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
}
.social-icon {
    width: 32px;
    height: 32px;
    transition: all 0.2s ease;
}
.social-icons a {
    border-bottom: none !important;
    padding: 8px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.social-icons a:hover {
    background: #f8f9fa;
    border-bottom: none !important;
}
.social-icons a:hover .social-icon {
    transform: scale(1.1);
}
.finance .topic-decoration,
.finance .topic-decoration-bottom {
    background: linear-gradient(135deg, #00f5ff 0%, #0066ff 50%, #8338ec 100%);
}
.ml .topic-decoration,
.ml .topic-decoration-bottom {
    background: linear-gradient(135deg, #3a86ff 0%, #8338ec 50%, #ff006e 100%);
}
.robotics .topic-decoration,
.robotics .topic-decoration-bottom {
    background: linear-gradient(135deg, #ff9500 0%, #ff006e 50%, #8338ec 100%);
}