:root {
            --primary: #1a365d;
            --secondary: #c53030;
            --accent: #f6ad55;
            --light: #f7fafc;
            --dark: #2d3748;
            --gray: #718096;
            --transition: all 0.3s ease;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        .header {
            background: linear-gradient(135deg, var(--primary), #2a4365);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(to right, var(--accent), white);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
            transition: var(--transition);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .nav-desktop a:hover,
        .nav-desktop a.active {
            background-color: rgba(255, 255, 255, 0.2);
            color: var(--accent);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary);
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .nav-mobile a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            max-width: var(--max-width);
            margin: 1rem auto;
            padding: 0 2rem;
            font-size: 0.9rem;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .container {
            max-width: var(--max-width);
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        @media (max-width: 1024px) {
            .sidebar {
                position: static;
            }
        }
        h1, h2, h3, h4 {
            color: var(--primary);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid var(--accent);
            padding-bottom: 0.5rem;
            margin-top: 0;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--secondary);
        }
        h3 {
            font-size: 1.8rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--gray);
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
            background: linear-gradient(to right, #f6ad55, #fed7d7);
            padding: 1.5rem;
            border-left: 5px solid var(--secondary);
            border-radius: var(--radius);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .data-box {
            background: #f7fafc;
            border: 2px solid #cbd5e0;
            border-radius: var(--radius);
            padding: 1.5rem;
            margin: 2rem 0;
        }
        .data-box h4 {
            margin-top: 0;
            color: var(--primary);
        }
        .img-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .feature-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .feature-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.2);
        }
        .caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .related-links {
            background: #ebf8ff;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin: 2rem 0;
        }
        .related-links h4 {
            color: var(--primary);
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            padding-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .related-links li:before {
            content: "⚽";
            position: absolute;
            left: 0;
        }
        .related-links a {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
        }
        .related-links a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        blockquote {
            border-left: 5px solid var(--secondary);
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            background: #fed7d7;
            color: var(--dark);
            font-style: italic;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-size: 1.2rem;
        }
        blockquote footer {
            margin-top: 1rem;
            font-weight: bold;
            color: var(--primary);
        }
        .search-box {
            margin-bottom: 2rem;
        }
        .search-box input {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 2px solid #cbd5e0;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.2);
        }
        .rating-widget {
            background: #f0fff4;
            padding: 1.5rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
            border: 2px dashed #68d391;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 2rem;
            cursor: pointer;
        }
        .star {
            color: #cbd5e0;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #f6ad55;
            transform: scale(1.2);
        }
        .comment-form {
            background: #f7fafc;
            padding: 1.8rem;
            border-radius: var(--radius);
            margin-top: 2rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #cbd5e0;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.2);
        }
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
        }
        .btn i {
            font-size: 1.1rem;
        }
        .update-time {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-section h4 {
            color: var(--accent);
            margin-top: 0;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: var(--radius);
            margin-bottom: 1rem;
        }
        friend-link a {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mt-3 { margin-top: 3rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .bold { font-weight: 800; color: var(--primary); }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-container,
            .breadcrumb,
            .container {
                padding: 0 1rem;
            }
            .article-content {
                padding: 1.5rem;
            }
        }