:root {
            --primary-color: #0033a0; 
            --secondary-color: #ed1c24; 
            --accent-color: #00a651; 
            --dark-bg: #111;
            --light-bg: #f8f9fa;
            --text-dark: #212529;
            --text-light: #e9ecef;
            --card-shadow: 0 4px 12px rgba(0, 51, 160, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #001f5c 100%);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0,0,0,0.2);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            text-transform: uppercase;
            letter-spacing: -1px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--secondary-color);
            transform: scale(1.02);
        }
        .my-logo i {
            color: var(--secondary-color);
            font-size: 2.5rem;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
            position: relative;
        }
        .desktop-nav a:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .desktop-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            position: fixed;
            top: 80px;
            right: -100%;
            width: 80%;
            max-width: 350px;
            height: calc(100vh - 80px);
            background: var(--primary-color);
            padding: 2rem;
            transition: var(--transition);
            z-index: 999;
            box-shadow: -5px 0 15px rgba(0,0,0,0.2);
            overflow-y: auto;
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            color: var(--secondary-color);
            padding-left: 1rem;
        }
        .search-form {
            display: flex;
            margin-left: 2rem;
            flex: 0 1 300px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.7rem 1rem;
            border: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #c91820;
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #dee2e6;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }
        @media (max-width: 1200px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: var(--card-shadow);
            overflow: hidden;
        }
        .article-header {
            border-bottom: 3px solid var(--primary-color);
            padding-bottom: 1.5rem;
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: #6c757d;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .meta-item i {
            margin-right: 0.5rem;
            color: var(--secondary-color);
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: scale(1.005);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }
        h3 {
            font-size: 1.6rem;
            color: #333;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #555;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .content-highlight {
            background: linear-gradient(90deg, rgba(0,51,160,0.05) 0%, rgba(237,28,36,0.05) 100%);
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background: #e7f4e4;
            border: 1px solid var(--accent-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            position: relative;
        }
        .tip-box::before {
            content: '💡 PRO TIP';
            display: block;
            font-weight: bold;
            color: var(--accent-color);
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }
        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        strong {
            color: var(--primary-color);
            font-weight: 700;
        }
        .internal-link {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted currentColor;
            transition: var(--transition);
        }
        .internal-link:hover {
            color: var(--primary-color);
            border-bottom-style: solid;
        }
        .controls-diagram {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .control-item {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid #dee2e6;
        }
        .control-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }
        .control-item i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: var(--card-shadow);
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #e9ecef;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffc107;
            margin: 1rem 0;
            cursor: pointer;
        }
        .star {
            transition: var(--transition);
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form textarea,
        .comment-form textarea,
        .score-form select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ced4da;
            border-radius: 4px;
            font-family: inherit;
            margin-bottom: 1rem;
            resize: vertical;
        }
        .rating-form button,
        .comment-form button,
        .score-form button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .rating-form button:hover,
        .comment-form button:hover,
        .score-form button:hover {
            background: #002a80;
        }
        .site-footer {
            background: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
        }
        .footer-columns {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 1.8rem;
            color: white;
            margin-bottom: 1rem;
            display: block;
        }
        .footer-links a {
            display: block;
            color: #adb5bd;
            text-decoration: none;
            margin-bottom: 0.7rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 0.5rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.05);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin: 0.3rem;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        friend-link a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        friend-link a:hover {
            color: var(--secondary-color);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            color: #6c757d;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .search-form {
                order: 3;
                flex: 1 0 100%;
                margin: 1rem 0 0 0;
            }
            .main-container, .site-header, .breadcrumb {
                padding: 0 1rem;
            }
            article {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }
        .emoji { font-size: 1.2em; }
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
            margin: 2.5rem 0;
        }