* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-yellow: #FFCC00;
            --primary-blue: #1E22AA;
            --accent-pink: #FF00AA;
            --dark-bg: #111;
            --light-bg: #F8F9FA;
            --text-dark: #222;
            --text-light: #EEE;
            --shadow: 0 4px 12px rgba(0,0,0,0.15);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            max-width: 100%;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-pink);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-blue) 100%);
            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 {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary-yellow);
            text-shadow: 2px 2px 0 var(--accent-pink);
            letter-spacing: -1px;
        }
        .my-logo span {
            color: white;
            font-style: italic;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: var(--radius);
        }
        .main-nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--primary-yellow);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: rgba(255,255,255,0.1);
            padding: 0.8rem 1rem;
            border-radius: var(--radius);
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-yellow);
        }
        .breadcrumb i {
            margin: 0 0.5rem;
            color: #aaa;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem auto;
        }
        main {
            background-color: white;
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        aside {
            background-color: white;
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            color: var(--primary-blue);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--primary-yellow);
            padding-bottom: 0.5rem;
        }
        h2 {
            color: var(--primary-blue);
            font-size: 2rem;
            margin: 2.5rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid var(--accent-pink);
        }
        h3 {
            color: var(--dark-bg);
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: #555;
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: #333;
            font-weight: 500;
            background: linear-gradient(to right, #FFCC00, #FFCC0022);
            padding: 1.2rem;
            border-radius: var(--radius);
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #FFF9E6;
            border-left: 4px solid var(--primary-yellow);
            padding: 1.2rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .note {
            background-color: #E6F7FF;
            border-left: 4px solid var(--primary-blue);
            padding: 1rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.5rem 0;
        }
        .keyword-link {
            font-weight: bold;
            color: var(--primary-blue);
            border-bottom: 2px dotted var(--primary-yellow);
        }
        .keyword-link:hover {
            border-bottom-style: solid;
        }
        em {
            color: #666;
            font-style: italic;
        }
        strong {
            color: var(--primary-blue);
        }
        .feature-img {
            width: 100%;
            border-radius: var(--radius);
            border: 5px solid var(--primary-yellow);
            margin: 2rem auto;
            box-shadow: var(--shadow);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .interactive-box {
            background: linear-gradient(145deg, #f0f0f0, #ffffff);
            border-radius: var(--radius);
            padding: 1.5rem;
            margin: 2rem 0;
            border: 1px solid #ddd;
        }
        .interactive-box h3 {
            margin-top: 0;
            color: var(--primary-blue);
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 34, 170, 0.2);
        }
        .btn {
            background: linear-gradient(to right, var(--primary-blue), var(--accent-pink));
            color: white;
            border: none;
            padding: 0.9rem 1.8rem;
            border-radius: var(--radius);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            color: #ddd;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: var(--primary-yellow);
        }
        .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: 2rem;
        }
        .footer-section h4 {
            color: var(--primary-yellow);
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--primary-yellow);
            padding-left: 0.5rem;
        }
        friend-link {
            display: inline-block;
            background-color: #333;
            color: white;
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 20px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: var(--primary-blue);
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        .last-updated {
            background-color: #222;
            color: var(--primary-yellow);
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            display: inline-block;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 300px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                display: block;
                padding: 0.8rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            main, aside {
                padding: 1.5rem;
            }
        }