.section-features {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #718096;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding: 20px;
}

.feature-box {
    background: white;
    border-radius: 15px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-number {
    font-size: 0.9rem;
    font-weight: 600;
    color: #4299e1;
    background: #ebf8ff;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
}

.feature-title {
    font-size: 1.4rem;
    color: #2d3748;
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-description {
    color: #718096;
    line-height: 1.6;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-box {
        padding: 25px;
    }
}

/* Technologies Section */
.technologies {
    padding: 80px 0;
    background: linear-gradient(to bottom right, #ffffff, #f8f9fa);
}

.tech-part {
    margin-bottom: 60px;
}

.tech-part-header {
    text-align: left;
    margin-bottom: 30px;
    padding: 20px;
    background: #2d3748;
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
}

.tech-part-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-right: 20px;
    color: #4299e1;
}

.tech-part-title {
    font-size: 1.8rem;
    margin: 0;
}

.tech-part-description {
    font-size: 1.1rem;
    color: #cbd5e0;
    margin: 5px 0 0 0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.tech-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.tech-icon {
    width: auto;
    height: 60px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
    object-fit: contain;
    max-width: 180px;
}

.tech-card:hover .tech-icon {
    transform: scale(1.1);
}

/* Special handling for specific logos that need adjustments */
.tech-card img[alt="Scikit-learn"],
.tech-card img[alt="XGBoost"],
.tech-card img[alt="KServe"] {
    height: 45px;
    width: auto;
    max-width: 160px;
}

.tech-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
}

.tech-description {
    font-size: 0.9rem;
    color: #718096;
    line-height: 1.5;
    flex-grow: 1;
}

.tech-category {
    display: inline-block;
    padding: 4px 12px;
    background: #ebf8ff;
    color: #4299e1;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-top: 15px;
}

@media (max-width: 768px) {
    .tech-part-header {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }

    .tech-part-number {
        margin: 0 0 10px 0;
    }

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

.faq-list {
    max-width: 650px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.faq-question {
    margin: 0;
    padding: 24px 32px;
    font-size: 1.125rem;
    font-weight: 500;
    color: #2d3748;
    background: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    line-height: 1.4;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: #4299e1;
    transition: transform 0.3s ease;
    margin-left: 16px;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    padding: 0 32px;
    margin: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
    color: #4a5568;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 32px 24px;
    opacity: 1;
}

#faq .section-title {
    font-size: 2.5rem;
    color: #1a202c;
    text-align: center;
    margin-bottom: 48px;
}

.testimonial-card {
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #2d3748;
    margin-bottom: 24px;
    flex-grow: 1;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    color: #2d3748;
    font-size: 1.1rem;
}

.testimonial-author span {
    color: #718096;
    font-size: 0.95rem;
}

.testimonial-source {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.testimonial-source a {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #4299e1;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.testimonial-source a:hover {
    color: #2b6cb0;
}

.testimonial-source svg {
    width: 18px;
    height: 18px;
}

.instructor-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.instructor-image {
    flex-shrink: 0;
}

.instructor-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.instructor-info {
    flex: 1;
}

.instructor-header {
    margin-bottom: 24px;
}

.instructor-name {
    font-size: 2rem;
    color: #1a202c;
    margin: 0 0 8px 0;
}

.instructor-role {
    font-size: 1.1rem;
    color: #4a5568;
    margin: 0;
}

.instructor-bio {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #2d3748;
    margin-bottom: 32px;
}

.instructor-experience {
    margin-bottom: 32px;
}

.instructor-experience h4 {
    font-size: 1.2rem;
    color: #2d3748;
    margin: 0 0 16px 0;
}

.experience-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.experience-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: #4a5568;
    line-height: 1.5;
}

.experience-list li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: #4299e1;
}

.instructor-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.instructor-badge {
    background: #ebf8ff;
    color: #2b6cb0;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.instructor-links {
    display: flex;
    gap: 16px;
}

.instructor-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #4299e1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.instructor-link:hover {
    color: #2b6cb0;
}

.link-icon {
    width: 20px;
    height: 20px;
}

/* Media query for mobile responsiveness */
@media (max-width: 768px) {
    .instructor-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .instructor-image {
        margin-bottom: 1.5rem;
    }

    .instructor-avatar {
        width: 150px;
        height: 150px;
    }
}

.section-highlight {
    background: linear-gradient(135deg, #f5f7ff 0%, #e8f0ff 100%);
}

.free-banner {
    text-align: center;
    margin-bottom: 3rem;
}

.free-badge {
    background: #22c55e;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.2rem;
    display: inline-block;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-options {
    display: flex;
    gap: 2rem;
    margin: 0 auto;
    max-width: 1200px;
    padding: 0 1rem;
}

.pricing-card {
    flex: 1;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.pricing-card.highlight {
    border: 2px solid #22c55e;
    transform: scale(1.02);
}

.pricing-features {
    margin: 2rem 0;
}

.pricing-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: #22c55e;
}

@media (max-width: 768px) {
    .pricing-options {
        flex-direction: column;
    }

    .pricing-card.highlight {
        transform: none;
        order: -1;
    }
}

.why-free {
    max-width: 650px;
    margin: 3rem auto 0;
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.why-free h3 {
    color: #1f2937;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.why-free p {
    color: #4b5563;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .pricing-card.free {
        padding: 1.5rem;
        margin: 0 1rem;
    }
    
    .original-price {
        font-size: 2.5rem;
    }
    
    .pricing-features li {
        font-size: 1rem;
    }
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
    justify-content: center;
}

.tech-badge {
    transition: transform 0.2s ease;
}

.tech-badge:hover {
    transform: translateY(-2px);
}

.tech-badge img {
    height: 28px;
    display: block;
}

@media (max-width: 768px) {
    .tech-badges {
        gap: 0.5rem;
        margin-top: 1.5rem;
    }
    
    .tech-badge img {
        height: 24px;
    }
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease;
}

.project-card:hover {
    transform: translateY(-4px);
}

.project-card.main {
    grid-column: 1 / -1;
}

.project-content {
    padding: 2rem;
}

.project-description {
    color: #4b5563;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.project-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.project-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: #2563eb;
}

.project-list li strong {
    color: #1f2937;
    display: block;
    margin-bottom: 0.25rem;
}

.project-list ul {
    list-style: none;
    padding-left: 1.5rem;
    margin-top: 0.5rem;
}

.project-list ul li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.project-list ul li::before {
    content: "•";
}

.project-card.featured {
    position: relative;
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #2563eb;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 1;
}

.featured-project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid #e5e7eb;
}

.project-cta {
    margin-top: 2rem;
    text-align: center;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card.main {
        grid-column: auto;
    }

    .project-content {
        padding: 1.5rem;
    }
}

.project-list a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.2s ease;
}

.project-list a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.learning-public-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.quote-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.quote-image {
    width: 100%;
    height: auto;
    border-bottom: 1px solid #e5e7eb;
}

.quote-attribution {
    padding: 1rem;
    text-align: center;
    color: #4b5563;
    font-style: italic;
}

.quote-attribution a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.2s ease;
}

.quote-attribution a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.learning-benefits {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.learning-benefits h3 {
    margin-bottom: 1.5rem;
    color: #1f2937;
    font-size: 1.5rem;
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.benefits-list li {
    margin-bottom: 1.5rem;
}

.benefits-list li:last-child {
    margin-bottom: 0;
}

.benefits-list strong {
    display: block;
    color: #1f2937;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.benefits-list p {
    color: #4b5563;
    margin: 0;
    line-height: 1.5;
}

.leaderboard-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.leaderboard-image {
    width: 100%;
    height: auto;
    border-bottom: 1px solid #e5e7eb;
}

.leaderboard-caption {
    padding: 1rem;
    text-align: center;
    color: #4b5563;
    font-size: 0.95rem;
}

.learning-cta {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cta-text {
    color: #1f2937;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .learning-public-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .learning-benefits {
        padding: 1.5rem;
    }

    .cta-text {
        font-size: 1.1rem;
    }
}