* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
            border-left: 1px solid #ddd;
            border-right: 1px solid #ddd;
            box-shadow: 0 0 30px rgba(0,0,0,0.05);
        }
        h1, h2, h3, h4 { color: #1a365d; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 2.8rem; padding-top: 1.5rem; border-bottom: 4px solid #e53e3e; display: inline-block; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid #cbd5e0; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #2d3748; }
        h4 { font-size: 1.4rem; margin-top: 1.5rem; color: #4a5568; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #2b6cb0; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #e53e3e; text-decoration: underline; }
        strong { color: #2d3748; }
        em { color: #718096; }
        .site-header {
            background: linear-gradient(to right, #1a365d, #2d3748);
            color: white;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-radius: 0 0 12px 12px;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .my-logo i { margin-right: 10px; color: #e53e3e; }
        .my-logo:hover { color: #fbd38d; }
        .main-nav { display: flex; align-items: center; }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-links a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.1);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #718096;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: #4a5568; }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .article-main {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .article-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 8px;
            margin: 2rem 0;
            border: 5px solid #edf2f7;
        }
        .highlight-box {
            background: #f7fafc;
            border-left: 5px solid #e53e3e;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .link-list {
            background: #edf2f7;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .link-list li { margin-bottom: 0.5rem; }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a365d;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-family: inherit;
        }
        button {
            background: #2b6cb0;
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
            width: 100%;
        }
        button:hover { background: #1a365d; }
        .star-rating {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 1.8rem;
            color: #cbd5e0;
        }
        .star-rating i { cursor: pointer; transition: color 0.2s; }
        .star-rating i:hover,
        .star-rating i.active { color: #f6e05e; }
        .site-footer {
            background: #1a365d;
            color: #e2e8f0;
            padding: 3rem 0 1.5rem;
            border-radius: 12px 12px 0 0;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 { color: #fbd38d; border-bottom: 1px solid #4a5568; padding-bottom: 0.5rem; }
        friend-link {
            display: block;
            padding: 0.5rem 0;
            color: #90cdf4;
        }
        friend-link:hover { color: #fbd38d; text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .header-container { flex-direction: column; align-items: flex-start; }
            .nav-links {
                flex-direction: column;
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .nav-links.active { display: flex; }
            .hamburger { display: block; align-self: flex-end; margin-top: -3rem; }
            .article-main { padding: 1.5rem; }
        }
        .interactive-element:hover {
            transform: translateY(-3px);
            transition: transform 0.3s ease;
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }