* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a4365;
            --secondary: #3182ce;
            --accent: #f6ad55;
            --light: #f7fafc;
            --dark: #1a202c;
            --gray: #718096;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            text-decoration: none;
            color: var(--accent);
        }
        .my-logo i {
            color: var(--accent);
        }
        nav.desktop-nav {
            display: flex;
            gap: 25px;
        }
        @media (max-width: 768px) {
            nav.desktop-nav {
                display: none;
            }
        }
        nav.desktop-nav a {
            color: white;
            font-weight: 500;
            padding: 5px 0;
            border-bottom: 2px solid transparent;
        }
        nav.desktop-nav a:hover {
            border-bottom-color: var(--accent);
            text-decoration: none;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--primary);
            padding: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb span {
            color: var(--dark);
            font-weight: 500;
        }
        main {
            padding: 30px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background-color: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        aside.sidebar {
            background-color: white;
            border-radius: 10px;
            padding: 25px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        @media (max-width: 992px) {
            aside.sidebar {
                position: static;
            }
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            margin-bottom: 15px;
            font-size: 1.2rem;
        }
        .search-form {
            display: flex;
            margin-bottom: 20px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #cbd5e0;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-form button:hover {
            background-color: var(--primary);
        }
        .rating-section, .comment-section {
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: 8px;
            margin-top: 30px;
            border-left: 4px solid var(--secondary);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #e2e8f0;
        }
        .rating-stars .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars .star.active,
        .rating-stars .star:hover {
            color: #f6ad55;
        }
        .comment-form textarea, .comment-form input {
            width: 100%;
            padding: 12px;
            margin-bottom: 15px;
            border: 1px solid #cbd5e0;
            border-radius: 5px;
            font-size: 1rem;
        }
        .comment-form button, .rating-section button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }
        .comment-form button:hover, .rating-section button:hover {
            background-color: var(--primary);
        }
        h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 20px;
            line-height: 1.3;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 15px;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
        }
        h2 {
            color: var(--primary);
            font-size: 1.8rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #e2e8f0;
        }
        h3 {
            color: var(--secondary);
            font-size: 1.5rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--dark);
            font-size: 1.2rem;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--dark);
            background-color: #ebf8ff;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
            border-left: 4px solid var(--secondary);
        }
        .highlight {
            background-color: #fffaf0;
            border-left: 4px solid #f6ad55;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 30px auto;
            display: block;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .related-links {
            background-color: #f7fafc;
            padding: 20px;
            border-radius: 8px;
            margin: 30px 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px;
            background-color: white;
            border-radius: 5px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .related-links a:hover {
            background-color: #ebf8ff;
            text-decoration: none;
            transform: translateY(-3px);
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat {
            background: linear-gradient(135deg, #2a4365, #3182ce);
            color: white;
            padding: 20px;
            border-radius: 10px;
            text-align: center;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            display: block;
        }
        .stat-label {
            font-size: 1rem;
            opacity: 0.9;
        }
        .update-time {
            color: var(--gray);
            font-style: italic;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed #cbd5e0;
            text-align: right;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
        }
        friend-link a {
            color: #cbd5e0;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a5568;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .bold {
            font-weight: 800;
            color: var(--primary);
        }
        .center {
            text-align: center;
        }