.case-study-page {
    padding: 40px 20px;
    max-width: 800px;
    margin: 0 auto;
}

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

.article-header .meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
    color: #666;
    font-size: 14px;
}

.article-header h1 {
    font-size: 40px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #333;
}

.subtitle {
    font-size: 20px;
    color: #666;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.article-content {
    font-size: 18px;
    line-height: 1.8;
    color: #444;
}

.article-content h2 {
    font-size: 32px;
    margin: 48px 0 24px;
    color: #333;
}

.article-content h3 {
    font-size: 24px;
    margin: 32px 0 16px;
    color: #333;
}

.article-content h4 {
    font-size: 20px;
    margin: 24px 0 12px;
    color: #333;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.article-content li {
    margin-bottom: 8px;
}

.read-time {
    color: #666;
}

.highlight-quote {
    font-size: 24px;
    line-height: 1.4;
    color: #007AFF;
    border-left: 4px solid #007AFF;
    padding-left: 24px;
    margin: 40px 0;
    font-style: italic;
}

.tech-stack {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 32px;
    margin: 40px 0;
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.tech-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.tech-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
}

.tech-desc {
    font-size: 14px;
    color: #666;
}

.feature-highlight {
    margin: 40px 0;
}

.feature-highlight img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.caption {
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-top: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 40px 0;
    text-align: center;
}

.stat-item {
    background: #f8f9fa;
    padding: 24px;
    border-radius: 8px;
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: #007AFF;
    margin-bottom: 8px;
}

.stat-label {
    color: #666;
    font-size: 14px;
}

.cta-section {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    margin: 60px 0;
}

.cta-section h3 {
    color: #333;
    margin-bottom: 16px;
}

.cta-section p {
    margin-bottom: 24px;
}

.cta-section .primary-btn {
    display: inline-block;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .article-header h1 {
        font-size: 32px;
    }

    .subtitle {
        font-size: 18px;
    }

    .article-content {
        font-size: 16px;
    }

    .article-content h2 {
        font-size: 28px;
    }

    .article-content h3 {
        font-size: 22px;
    }

    .article-content h4 {
        font-size: 18px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .highlight-quote {
        font-size: 20px;
        padding-left: 16px;
    }
}

.case-study-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    justify-content: center;
}

.article-header .meta {
    margin-bottom: 24px;
    color: #666;
    font-size: 14px;
}

.back-nav {
    text-align: center;
    margin-bottom: 40px;
}

.outline-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: 2px solid #007AFF;
    color: #007AFF;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.outline-btn:hover {
    background: rgba(0, 122, 255, 0.1);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .back-nav {
        margin-bottom: 30px;
    }
}