:root {
            --primary-blue: #003366;
            --secondary-gold: #FFD700;
            --accent-green: #008000;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --medium-gray: #6c757d;
            --border-color: #dee2e6;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            color: var(--dark-text);
            background-color: #fff;
            line-height: 1.6;
            font-size: 1.05rem;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--accent-green);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #002244 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary-gold);
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: white;
        }
        .my-logo span {
            color: white;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            font-size: 1rem;
        }
        nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: var(--medium-gray);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--secondary-gold);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--accent-green);
            margin: 2rem 0 1rem 0;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--medium-gray);
            margin: 1.5rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        em {
            color: var(--medium-gray);
        }
        .highlight-box {
            background: linear-gradient(to right, var(--light-bg), #e9f7ef);
            border-left: 5px solid var(--accent-green);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .feature-card {
            background: white;
            border: 1px solid var(--border-color);
            border-top: 5px solid var(--secondary-gold);
            padding: 1.5rem;
            border-radius: 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .user-interaction {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: 10px;
            margin: 3rem 0;
            border: 1px solid var(--border-color);
        }
        .interaction-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1.5rem;
            color: var(--primary-blue);
        }
        .interaction-title i {
            color: var(--secondary-gold);
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            width: 100%;
        }
        button {
            background: linear-gradient(to right, var(--primary-blue), var(--accent-green));
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        button:hover {
            background: linear-gradient(to right, #002244, #006400);
            transform: scale(1.03);
        }
        .star-rating {
            display: flex;
            gap: 5px;
            margin: 0.5rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--secondary-gold);
        }
        footer {
            background-color: var(--primary-blue);
            color: white;
            padding: 3rem 0 1.5rem 0;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--secondary-gold);
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            border-bottom: none;
        }
        friend-link {
            display: block;
            padding: 0.5rem 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        .last-updated {
            font-style: italic;
            color: var(--medium-gray);
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .tag {
            display: inline-block;
            background-color: var(--light-bg);
            color: var(--primary-blue);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            border: 1px solid var(--border-color);
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                display: none;
                gap: 0;
            }
            nav ul.active {
                display: flex;
            }
            nav a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 20px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            article, .user-interaction {
                padding: 1.5rem;
            }
        }