:root {
    --primary-color: #2c5282;
    --secondary-color: #3182ce;
    --accent-color: #4299e1;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --error-color: #f56565;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-header {
    background-color: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    width: 60px;
    height: 60px;
    border-radius: 8px;
}

.site-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.primary-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
    flex-wrap: wrap;
}

.primary-navigation .nav-menu li a {
    padding: 10px 15px;
    color: var(--text-medium);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border-radius: 6px;
}

.primary-navigation .nav-menu li a:hover,
.primary-navigation .nav-menu li a.active {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.hero-story {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    padding: 80px 0;
    text-align: center;
}

.hero-story h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.story-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 1000px;
    margin: 0 auto;
    opacity: 0.95;
}

.evolution-grid {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.section-headline {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-subtext {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-medium);
    margin-bottom: 50px;
}

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

.phase-zone {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.phase-zone:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.zone-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.zone-early .zone-icon { background: #e6f7ff; color: #1890ff; }
.zone-growth .zone-icon { background: #f0f5ff; color: #597ef7; }
.zone-maturity .zone-icon { background: #f6ffed; color: #52c41a; }
.zone-infrastructure .zone-icon { background: #fff7e6; color: #fa8c16; }
.zone-participation .zone-icon { background: #fff0f6; color: #eb2f96; }
.zone-consolidation .zone-icon { background: #f9f0ff; color: #722ed1; }

.phase-zone h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.phase-zone p {
    color: var(--text-medium);
    margin-bottom: 20px;
}

.phase-indicators {
    list-style: none;
    margin: 20px 0;
}

.phase-indicators li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-medium);
}

.phase-indicators li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.phase-action {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.phase-action:hover {
    background-color: var(--secondary-color);
}

.visual-methodology {
    padding: 80px 0;
}

.visual-methodology h2 {
    text-align: center;
    font-size: 2.3rem;
    color: var(--primary-color);
    margin-bottom: 50px;
}

.visual-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.visual-item img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.visual-item h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.latest-research {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.latest-research h2 {
    text-align: center;
    font-size: 2.3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 50px;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.research-card {
    background: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.research-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.research-card h3 {
    padding: 20px 20px 10px;
    font-size: 1.3rem;
    color: var(--primary-color);
}

.research-card p {
    padding: 0 20px 20px;
    color: var(--text-medium);
}

.read-link {
    display: inline-block;
    margin: 0 20px 20px;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.read-link:hover {
    text-decoration: underline;
}

.interesting-facts {
    padding: 80px 0;
}

.interesting-facts h2 {
    text-align: center;
    font-size: 2.3rem;
    color: var(--primary-color);
    margin-bottom: 50px;
}

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

.fact-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.fact-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.fact-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.main-footer {
    background-color: var(--text-dark);
    color: var(--bg-light);
    padding: 60px 0 30px;
}

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

.footer-col h4 {
    color: var(--bg-white);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--bg-light);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--accent-color);
}

.publisher-info {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 15px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
}

.disclaimer-text,
.reg-info {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-bottom: 10px;
}

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    padding: 25px;
    z-index: 9999;
    display: none;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
}

.cookie-content h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.cookie-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.cookie-buttons button {
    padding: 12px 25px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-accept {
    background-color: var(--success-color);
    color: var(--bg-white);
}

.btn-necessary {
    background-color: var(--warning-color);
    color: var(--bg-white);
}

.btn-reject {
    background-color: var(--text-medium);
    color: var(--bg-white);
}

.page-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.content-section {
    padding: 60px 0;
}

.content-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 50px;
}

.main-content {
    max-width: 100%;
}

.featured-image {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 30px;
}

.main-content h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin: 30px 0 20px;
}

.main-content h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 25px 0 15px;
}

.main-content p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-medium);
}

.info-box {
    background-color: var(--bg-light);
    padding: 25px;
    border-left: 4px solid var(--accent-color);
    margin: 30px 0;
    border-radius: 6px;
}

.info-box h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 25px;
}

.sidebar-widget h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.phase-nav,
.related-links {
    list-style: none;
}

.phase-nav li,
.related-links li {
    margin-bottom: 10px;
}

.phase-nav li a,
.related-links li a {
    color: var(--text-medium);
    text-decoration: none;
    transition: color 0.3s;
}

.phase-nav li a:hover,
.related-links li a:hover {
    color: var(--accent-color);
}

.blog-post {
    padding: 60px 0;
}

.post-header {
    text-align: center;
    margin-bottom: 40px;
}

.post-header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.post-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.95rem;
}

.post-featured-image {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 40px;
}

.post-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.lead-paragraph {
    font-size: 1.2rem;
    color: var(--text-medium);
    margin-bottom: 30px;
    font-weight: 500;
}

.post-footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

.post-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.tag {
    background-color: var(--bg-light);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-medium);
}

.post-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    gap: 20px;
}

.nav-prev,
.nav-next {
    padding: 15px 25px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.nav-prev:hover,
.nav-next:hover {
    background-color: var(--secondary-color);
}

.blog-listing {
    padding: 60px 0;
}

.blog-filters {
    margin-bottom: 40px;
    text-align: center;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-medium);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-color: var(--primary-color);
}

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

.blog-card {
    background: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.card-image {
    position: relative;
}

.card-image img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

.card-content {
    padding: 25px;
}

.card-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.card-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.card-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.card-link:hover {
    text-decoration: underline;
}

.newsletter-signup {
    background-color: var(--bg-light);
    padding: 60px 0;
    text-align: center;
}

.newsletter-signup h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.newsletter-form {
    display: flex;
    max-width: 500px;
    margin: 30px auto;
    gap: 10px;
}

.newsletter-form input {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

.newsletter-form button {
    padding: 15px 30px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.newsletter-form button:hover {
    background-color: var(--secondary-color);
}

.newsletter-note {
    font-size: 0.9rem;
    color: var(--text-light);
}

@media (max-width: 1024px) {
    .content-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .primary-navigation .nav-menu {
        flex-direction: column;
        gap: 5px;
    }
    
    .hero-story h1 {
        font-size: 2rem;
    }
    
    .section-headline {
        font-size: 1.8rem;
    }
    
    .phase-grid,
    .visual-showcase,
    .research-grid,
    .facts-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .post-navigation {
        flex-direction: column;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
}