* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: '-apple-system', BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

:root {
    --primary: #0f172a;
    --accent: #d97706;
    --text-dark: #334155;
    --text-muted: #64748b;
    --bg-light: #f8fafc;
    --border: #cbd5e1;
    --white: #ffffff;
}

body {
    background: var(--white);
    color: var(--text-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.navbar {
    background: var(--white);
    border-bottom: 2px solid var(--bg-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1.2rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    padding-bottom: 0.4rem;
    transition: all 0.2s ease-in-out;
    border-bottom: 3px solid transparent;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary);
    border-color: var(--accent);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: contentFadeIn 0.35s ease-out;
}

@keyframes contentFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
}

.hero {
    background: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.92)),
        url('https://images.unsplash.com/photo-1516450360452-9312f5e86fc7?auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 7rem 2rem;
}

.hero-short {
    background: var(--primary);
    color: var(--white);
    text-align: center;
    padding: 4.5rem 2rem;
}

.hero h1, .hero-short h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1.2rem;
    color: var(--white);
    letter-spacing: -0.5px;
}

.lead {
    max-width: 750px;
    margin: 0 auto;
    color: #cbd5e1;
    font-size: 1.2rem;
    font-weight: 400;
}

.badge {
    background: var(--accent);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
    margin-bottom: 1rem;
    display: inline-block;
}

.section-title {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

p {
    margin-bottom: 1.5rem;
    color: #475569;
    font-size: 1.05rem;
    text-align: justify;
}

.image-box img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08);
}

.img-caption {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    font-style: italic;
    text-align: center;
}

.bullet-list {
    list-style-type: none;
    padding-left: 0;
}

.bullet-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.6rem;
    font-size: 1rem;
    color: #475569;
}

.bullet-list li::before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: -2px;
}

.challenges-section {
    margin-top: 5rem;
}

.subsection-title {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 2.5rem;
    text-align: center;
    font-weight: 800;
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.challenge-card {
    background: var(--bg-light);
    border-top: 4px solid var(--accent);
    padding: 2.5rem;
    border-radius: 6px;
    border-left: 1px solid #e2e8f0;
    border-right: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.challenge-card h4 {
    color: var(--primary);
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.small-container {
    max-width: 850px;
}

.highlight-text {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent);
    padding-left: 1rem;
}

.audience-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-left: 5px solid #16a34a;
    padding: 2.5rem;
    margin-top: 3rem;
    border-radius: 4px;
}

.audience-box h3 {
    color: #14532d;
    margin-bottom: 1rem;
    font-weight: 800;
}

.audience-box .bullet-list li {
    color: #166534;
}

.audience-box .bullet-list li::before {
    color: #16a34a;
}

.country-header {
    margin-bottom: 3.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 2.5rem;
}

.country-header h2 {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 800;
}

.country-desc {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.country-context {
    font-size: 1.05rem;
    background: #fffbeb;
    border: 1px solid #fef3c7;
    padding: 1.5rem;
    border-radius: 6px;
    color: #78350f;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.info-item {
    background: var(--white);
    border: 1px solid #e2e8f0;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

.info-item h5 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 0.5rem;
    font-weight: 800;
}

.site-footer {
    background: var(--primary);
    color: #94a3b8;
    padding: 4rem 0 2.5rem 0;
    margin-top: 7rem;
    border-top: 4px solid var(--accent);
}

.source-directory {
    padding-bottom: 2rem;
}

.source-directory h5 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.source-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.source-col h6 {
    color: #cbd5e1;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.source-col ul {
    list-style: none;
    padding-left: 0;
}

.source-col li {
    font-size: 0.85rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.source-col a {
    color: var(--accent);
    text-decoration: none;
    word-break: break-all;
}

.source-col a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #1e293b;
    padding-top: 2.5rem;
    font-size: 0.85rem;
    margin-top: 3rem;
    color: #64748b;
}

@media (max-width: 1024px) {
    .challenges-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .grid-2, .source-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 1.2rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }
}