:root {
            --primary-blue: #0a2463;
            --secondary-gold: #c39738;
            --accent-red: #b33a3a;
            --dark-bg: #0d1520;
            --light-bg: #f0f4f8;
            --text-light: #e6eaf0;
            --text-dark: #1a2b3c;
            --border-radius: 8px;
            --shadow: 0 6px 15px rgba(10, 36, 99, 0.15);
            --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(--light-bg);
            background-image: linear-gradient(to bottom, #f0f4f8 0%, #e1e8f0 100%);
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-red);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary-gold);
            text-transform: uppercase;
            letter-spacing: 1px;
            font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
            background: linear-gradient(90deg, #c39738, #f5d76e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: var(--border-radius);
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(195, 151, 56, 0.2);
            color: var(--secondary-gold);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: rgba(255,255,255,0.1);
            padding: 0.8rem 0;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #b8c7e0;
        }
        .breadcrumb a:hover {
            color: white;
        }
        .breadcrumb span {
            color: var(--secondary-gold);
            margin: 0 0.5rem;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        aside {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        h1 {
            color: var(--primary-blue);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary-gold);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--primary-blue);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #d4dce6;
        }
        h3 {
            color: var(--accent-red);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--dark-bg);
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary-blue);
            font-weight: 600;
            background-color: #f8f9fa;
            padding: 1.2rem;
            border-left: 5px solid var(--secondary-gold);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff9e6;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--secondary-gold);
            margin: 1.8rem 0;
        }
        .warning {
            background-color: #ffeaea;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--accent-red);
            margin: 1.8rem 0;
        }
        .info-box {
            background-color: #e8f4fd;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border-left: 5px solid #4a90e2;
            margin: 1.8rem 0;
        }
        .float-img {
            float: right;
            margin: 0 0 1.5rem 1.5rem;
            max-width: 45%;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-blue), #1a3a8f);
            color: white;
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            box-shadow: 0 4px 10px rgba(10, 36, 99, 0.3);
        }
        .btn:hover {
            background: linear-gradient(to right, var(--accent-red), #c44);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(179, 58, 58, 0.4);
        }
        .btn-gold {
            background: linear-gradient(to right, var(--secondary-gold), #e6b450);
        }
        .btn-gold:hover {
            background: linear-gradient(to right, #d4a732, #f0c75e);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 2.5rem 0;
        }
        .feature-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 1.8rem;
            box-shadow: 0 5px 12px rgba(0,0,0,0.08);
            border-top: 5px solid var(--primary-blue);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 20px rgba(0,0,0,0.12);
        }
        .feature-card h4 {
            color: var(--primary-blue);
            margin-top: 0;
        }
        .search-box, .comment-form, .rating-form {
            background-color: #f8f9fa;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            border: 1px solid #dee2e6;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-blue);
        }
        .form-control {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #ced4da;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(10, 36, 99, 0.15);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 1rem;
        }
        .star-rating .star {
            transition: var(--transition);
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: var(--secondary-gold);
        }
        .site-footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: var(--secondary-gold);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid rgba(195, 151, 56, 0.3);
            padding-bottom: 0.7rem;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b8c7e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1rem;
            border-left: 4px solid var(--secondary-gold);
        }
        friend-link a {
            color: var(--secondary-gold);
            font-weight: 600;
        }
        friend-link a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #8a9bb8;
        }
        .update-time {
            background-color: #e6f7ff;
            padding: 0.8rem;
            text-align: center;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
            color: var(--primary-blue);
            margin-top: 2rem;
            border: 1px dashed #91d5ff;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--dark-bg);
                padding: 1.5rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
                border-top: 2px solid var(--secondary-gold);
            }
            .main-nav.active ul {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .float-img {
                float: none;
                margin: 1.5rem auto;
                max-width: 100%;
            }
            article {
                padding: 1.8rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            .btn {
                display: block;
                width: 100%;
                margin-bottom: 1rem;
            }
        }