:root {
            --primary: #0A6EBD;
            --primary-dark: #084C8A;
            --accent: #FF6B00;
            --light: #F8F9FA;
            --dark: #212529;
            --gray: #6C757D;
            --light-gray: #E9ECEF;
            --border-radius: 8px;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--border-radius);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
        }
        .logo span {
            color: var(--accent);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            color: var(--dark);
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--dark);
            cursor: pointer;
        }
        .search-box {
            display: flex;
            margin-left: 20px;
        }
        .search-box input {
            padding: 10px 15px;
            border: 1px solid var(--light-gray);
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            width: 250px;
            outline: none;
        }
        .search-box button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: var(--primary-dark);
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb span {
            color: var(--dark);
            font-weight: 600;
        }
        .hero {
            padding: 60px 0 40px;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
            color: var(--dark);
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .publish-meta {
            display: flex;
            justify-content: center;
            gap: 20px;
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 40px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 40px;
            padding: 40px 0;
        }
        .main-content {
            background-color: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        h1, h2, h3, h4 {
            color: var(--dark);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--accent);
            padding-left: 15px;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-dark);
        }
        h4 {
            font-size: 1.4rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--primary-dark);
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin: 2rem 0;
        }
        .highlight {
            background-color: rgba(10, 110, 189, 0.08);
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--accent);
            margin: 2rem 0;
        }
        .highlight h3 {
            margin-top: 0;
            color: var(--accent);
        }
        .feature-img {
            margin: 2.5rem auto;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        blockquote {
            border-left: 4px solid var(--primary);
            padding-left: 25px;
            margin: 2.5rem 0;
            font-style: italic;
            color: var(--gray);
            font-size: 1.2rem;
        }
        .key-points {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 2rem 0;
        }
        .point-card {
            background-color: var(--light);
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .point-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
        }
        .point-card i {
            color: var(--accent);
            font-size: 2rem;
            margin-bottom: 15px;
        }
        .point-card h4 {
            margin-top: 0;
        }
        .interactive-module {
            background-color: var(--light-gray);
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 25px;
            color: var(--primary-dark);
        }
        .module-title i {
            color: var(--accent);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .rating-stars i {
            color: #FFC107;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(10, 110, 189, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            color: white;
            transform: translateY(-2px);
        }
        .btn-accent {
            background-color: var(--accent);
        }
        .btn-accent:hover {
            background-color: #E55A00;
        }
        .widget {
            background-color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.4rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light-gray);
            color: var(--primary-dark);
        }
        .link-list {
            list-style: none;
        }
        .link-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--light-gray);
        }
        .link-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .link-list i {
            color: var(--accent);
        }
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            background-color: var(--light-gray);
            padding: 8px 15px;
            border-radius: 50px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .tag:hover {
            background-color: var(--primary);
            color: white;
        }
        .longtail-links {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 30px;
        }
        .web-link {
            display: inline-block;
            margin: 0 15px 15px 0;
            padding: 10px 20px;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
        }
        .web-link a {
            color: white;
        }
        .site-footer {
            background-color: #1A1A1A;
            color: #ADB5BD;
            padding: 40px 0 30px;
            text-align: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        .copyright {
            border-top: 1px solid #333;
            padding-top: 25px;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background-color: white;
                box-shadow: var(--shadow);
                padding: 20px;
                transition: var(--transition);
                z-index: 999;
            }
            .main-nav.active {
                left: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid var(--light-gray);
                padding: 15px 0;
            }
            .main-nav li:last-child {
                border-bottom: none;
            }
            .search-box {
                margin-left: 0;
                margin-top: 20px;
                width: 100%;
            }
            .search-box input {
                width: 100%;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .main-content {
                padding: 25px;
            }
            h2 {
                font-size: 1.9rem;
            }
        }
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            .key-points {
                grid-template-columns: 1fr;
            }
            .publish-meta {
                flex-direction: column;
                gap: 10px;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .strong {
            font-weight: 700;
            color: var(--primary-dark);
        }