:root {
            --primary: #2E7D32;
            --secondary: #FF9800;
            --accent: #D32F2F;
            --light: #F1F8E9;
            --dark: #1B5E20;
            --text: #212121;
            --text-light: #757575;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', 'Nirmala UI', Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: #f9f9f9;
            font-size: 18px;
        }
        h1, h2, h3, h4 {
            font-family: 'Cambria', 'Nirmala UI', serif;
            color: var(--dark);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 { font-size: 2.8rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; border-bottom: 3px solid var(--secondary); padding-bottom: 0.5rem; }
        h3 { font-size: 1.8rem; color: var(--primary); }
        h4 { font-size: 1.5rem; }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header {
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.5rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--secondary);
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .logo:hover {
            text-decoration: none;
            transform: scale(1.02);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        .nav-desktop a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }
        .nav-desktop a:hover {
            background: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            width: 100%;
            background: var(--dark);
            padding: 1rem;
            margin-top: 1rem;
            border-radius: var(--radius);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            padding: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .breadcrumb {
            background: var(--light);
            padding: 0.8rem 0;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb span {
            color: var(--text-light);
            margin: 0 0.5rem;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        .content-card {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .intro {
            background: linear-gradient(to right, var(--light), #E8F5E9);
            border-left: 6px solid var(--secondary);
        }
        .highlight {
            background-color: #FFF8E1;
            padding: 1.5rem;
            border-radius: var(--radius);
            border-left: 5px solid var(--secondary);
            margin: 2rem 0;
        }
        .highlight strong {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .feature-list {
            list-style: none;
            margin: 1.5rem 0;
        }
        .feature-list li {
            padding: 0.8rem 0;
            border-bottom: 1px dashed #ddd;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-list i {
            color: var(--primary);
        }
        .sidebar-card {
            background: white;
            padding: 1.8rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
            position: sticky;
            top: 120px;
        }
        .sidebar-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary), var(--dark));
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: var(--radius);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, var(--dark), #0d3b11);
            transform: translateY(-2px);
            text-decoration: none;
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .rating {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .star {
            color: #ddd;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #FFC107;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: var(--radius);
            margin: 2rem auto;
            display: block;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.01);
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: var(--radius);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.1);
        }
        .web-link a {
            color: var(--dark);
            font-weight: 600;
        }
        .footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar-card {
                position: static;
            }
            .footer-links {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: block;
                position: absolute;
                right: 20px;
                top: 1.2rem;
            }
            .logo {
                font-size: 2rem;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .content-card {
                padding: 1.5rem;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
            .footer-content {
                flex-direction: column;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 0.2rem;
        }
        .special {
            color: var(--accent);
            font-weight: bold;
        }
        .keyword {
            background: #E3F2FD;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }