:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f3f4f6;
            --bg-white: #ffffff;
            --border-color: #d1d5db;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            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: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        .site-header {
            background-color: var(--bg-white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--secondary-color);
        }
        .main-nav ul {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .main-nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary-color);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--primary-color);
        }
        .breadcrumb {
            background-color: #e5e7eb;
            padding: 0.75rem 2rem;
            font-size: 0.9rem;
        }
        .breadcrumb-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .content-area {
            background-color: var(--bg-white);
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        article h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-meta {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            gap: 1rem;
        }
        .article-meta i {
            margin-right: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        h3 {
            font-size: 1.4rem;
            color: var(--secondary-color);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fef3c7;
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: var(--bg-white);
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.2rem;
            margin-top: 0;
            color: var(--primary-color);
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-right: none;
            border-radius: 5px 0 0 5px;
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.25rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #1e40af;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.5rem;
            color: #fbbf24;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            resize: vertical;
            margin-bottom: 1rem;
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .submit-btn:hover {
            background-color: #1e40af;
        }
        .long-tail-links {
            max-width: 1200px;
            margin: 3rem auto 2rem;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .web-link {
            background-color: var(--bg-white);
            padding: 1rem;
            border-radius: 5px;
            box-shadow: var(--shadow);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }
        .web-link a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        .site-footer {
            background-color: #111827;
            color: #d1d5db;
            padding: 3rem 2rem 1.5rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }
        .footer-col h4 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col a {
            color: #9ca3af;
            text-decoration: none;
            transition: var(--transition);
            line-height: 2;
        }
        .footer-col a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #374151;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        @media (max-width: 992px) {
            .main-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                padding: 1rem;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background-color: var(--bg-white);
                box-shadow: var(--shadow);
                transition: left 0.3s ease;
                padding: 2rem;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
            }
            .hamburger {
                display: block;
            }
            .content-area {
                padding: 1.5rem;
            }
            article h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .long-tail-links {
                grid-template-columns: 1fr;
            }
        }