:root {
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-meta: #6b7280;
    --bg-page: #f9fafb;
    --bg-surface: #ffffff;
    --border-color: #e5e7eb;
    --brand-color: #2563eb;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--brand-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 720px; /* Узкий контейнер для комфортного чтения */
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header a {
    color: var(--text-primary);
    text-decoration: none;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--brand-color);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: var(--text-meta);
    font-size: 0.95rem;
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--brand-color);
    text-decoration: none;
}

/* Main Content */
.main-content {
    padding: 60px 20px 80px;
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    min-height: calc(100vh - 150px);
}

/* Article Styles */
.article-header {
    margin-bottom: 40px;
}

.article-header time {
    display: block;
    color: var(--text-meta);
    font-size: 0.9rem;
    margin-bottom: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.lead-text {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.article-body h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-top: 48px;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    color: #000;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
    color: #111;
}

.article-body p {
    margin-bottom: 24px;
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.article-body ul, .article-body ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 12px;
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.article-body strong {
    color: var(--text-primary);
}

.article-body blockquote {
    margin: 40px 0;
    padding: 0 0 0 24px;
    border-left: 4px solid var(--brand-color);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* Tables */
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 1.05rem;
    text-align: left;
}

.article-body th, .article-body td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.article-body th {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-weight: 600;
}

.article-body tr:last-child td {
    border-bottom: none;
}

/* V3 SEO Components */
.author-meta {
    font-size: 0.85rem;
    color: var(--text-meta);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.key-takeaways {
    background-color: var(--bg-surface);
    border-left: 4px solid var(--text-primary);
    padding: 24px;
    margin: 32px 0;
    border-radius: 0 8px 8px 0;
}

.key-takeaways ul {
    margin: 0;
    padding-left: 20px;
}

.key-takeaways li {
    margin-bottom: 12px;
    font-weight: 500;
}
.key-takeaways li:last-child {
    margin-bottom: 0;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    text-align: center;
    color: var(--text-meta);
    font-size: 0.9rem;
    background-color: var(--bg-surface);
}

/* Mobile */
@media (max-width: 600px) {
    .header-inner {
        flex-direction: column;
        gap: 16px;
    }
    
    .article-header h1 {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 40px 20px;
        border: none;
    }
    
    .lead-text {
        font-size: 1.1rem;
    }
}