:root {
            --primary: #1b4d3e;
            --primary-hover: #143d31;
            --accent: #f39c12;
            --accent-hover: #d35400;
            --bg: #f4f7f6;
            --card-bg: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
        }

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

        body {
            background-color: var(--bg);
            color: var(--text-dark);
            line-height: 1.6;
        }

        /* Header & Navigation */
        header {
            background-color: var(--primary);
            color: #ffffff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }

        .header-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 14px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links {
            display: flex;
            gap: 20px;
        }

        .nav-links a {
            color: #e2e8f0;
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

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

        .burger-icon {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
        }

        .burger-icon span {
            width: 25px;
            height: 3px;
            background-color: #ffffff;
            border-radius: 2px;
        }

        @media (max-width: 768px) {
            .burger-icon { display: flex; }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%; right: 0; left: 0;
                background-color: var(--primary-hover);
                flex-direction: column;
                padding: 16px 24px;
                gap: 14px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-links.show { display: flex; }
        }

        /* Blog Section Layout */
        .blog-container {
            max-width: 1100px;
            margin: 36px auto;
            padding: 0 16px;
        }

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

        .blog-header h1 {
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 8px;
        }

        .blog-header p {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* Grid of Articles */
        .articles-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
        }

        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .badge {
            align-self: flex-start;
            background: #f0fdf4;
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .card-title {
            font-size: 1.2rem;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
            text-decoration: none;
            font-weight: 700;
        }

        .card-title a {
            color: inherit;
            text-decoration: none;
        }

        .card-title a:hover {
            color: var(--primary);
        }

        .card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
            line-height: 1.6;
        }

        .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
            display: flex;
            justify-content: space-between;
        }

        .read-more {
            color: var(--primary);
            font-weight: 700;
            text-decoration: none;
        }

        /* Footer & Modal */
        footer {
            background-color: #0f2d24;
            color: #94a3b8;
            padding: 32px 16px;
            text-align: center;
            font-size: 0.88rem;
            margin-top: 60px;
        }

        footer a {
            color: #cbd5e1;
            text-decoration: underline;
            margin: 0 10px;
            cursor: pointer;
        }

        .modal-overlay {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(15, 23, 42, 0.65);
            backdrop-filter: blur(4px);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            padding: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
        }

        .modal-overlay.active { opacity: 1; pointer-events: auto; }

        .modal-card {
            background: #ffffff;
            padding: 28px;
            border-radius: var(--radius);
            max-width: 480px;
            width: 100%;
        }

        .close-btn {
            width: 100%;
            padding: 10px;
            background: var(--primary);
            color: #ffffff;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            margin-top: 16px;
        }