:root {
            --primary: #005EB8; 
            --secondary: #FFCC00; 
            --dark: #0A1428;
            --light: #F5F7FA;
            --gray: #6C757D;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --max-width: 1280px;
        }
        * {
            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-color: var(--light);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--dark);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--secondary);
            transform: scale(1.02);
        }
        .my-logo i {
            color: var(--secondary);
        }
        .breadcrumb {
            padding: 1rem 0 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #ccc;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .breadcrumb span {
            margin: 0 5px;
        }
        .main-nav {
            display: flex;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background: var(--dark);
                flex-direction: column;
                padding: 2rem;
                gap: 1.5rem;
                transition: left 0.4s ease;
                box-shadow: 5px 0 15px rgba(0,0,0,0.2);
            }
            .main-nav.active {
                left: 0;
            }
            .hamburger {
                display: block;
            }
        }
        .hero {
            background: linear-gradient(rgba(10, 20, 40, 0.9), rgba(10, 20, 40, 0.8)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            color: white;
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            color: #eee;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        article h1 {
            color: var(--dark);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
        }
        article h2 {
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
        }
        article h3 {
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        article h4 {
            color: var(--gray);
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        article ul, article ol {
            margin-bottom: 1.2rem;
            padding-left: 1.5rem;
        }
        article li {
            margin-bottom: 0.5rem;
        }
        .highlight-box {
            background: #f8f9fa;
            border-left: 4px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .feature-img {
            width: 100%;
            margin: 2rem 0;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            color: var(--gray);
            background: #f9f9f9;
        }
        .internal-links {
            background: #e9f5ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .internal-links h3 {
            margin-top: 0;
        }
        .internal-links ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 10px;
            list-style: none;
            padding-left: 0;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            color: var(--primary);
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--secondary);
            color: var(--dark);
        }
        .rating-widget .stars {
            display: flex;
            gap: 5px;
            margin: 1rem 0;
        }
        .rating-widget .star {
            color: #ddd;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-widget .star:hover,
        .rating-widget .star.active {
            color: var(--warning);
        }
        .rating-form input, .rating-form select,
        .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
        }
        .rating-form button, .comment-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            cursor: pointer;
            width: 100%;
            font-weight: 600;
            transition: var(--transition);
        }
        .rating-form button:hover, .comment-form button:hover {
            background: var(--secondary);
            color: var(--dark);
        }
        .update-time {
            font-size: 0.9rem;
            color: var(--gray);
            text-align: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px dashed #ddd;
        }
        .site-footer {
            background: var(--dark);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            margin-bottom: 0.8rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #aaa;
        }
        .emoji {
            font-size: 1.2em;
        }
        .bold {
            font-weight: 800;
            color: var(--dark);
        }
        .text-center {
            text-align: center;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .tag {
            display: inline-block;
            background: #eef5ff;
            color: var(--primary);
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.85rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }