* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.8; color: #222; background: #fefefe; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        a { text-decoration: none; color: #e67e22; transition: color 0.3s; }
        a:hover { color: #d35400; }
        img { max-width: 100%; height: auto; border-radius: 10px; }
        header { background: linear-gradient(135deg, #1a237e, #4a148c); color: white; padding: 15px 0; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-top { display: flex; justify-content: space-between; align-items: center; }
        .my-logo { font-size: 2.8rem; font-weight: 900; text-transform: uppercase; letter-spacing: 2px; }
        .my-logo a { color: #ffeb3b; }
        .my-logo a:hover { color: #ffc107; }
        nav { position: relative; }
        .nav-links { display: flex; list-style: none; }
        .nav-links li { margin-left: 25px; }
        .nav-links a { color: white; font-weight: 600; padding: 8px 12px; border-radius: 5px; }
        .nav-links a:hover { background: rgba(255,255,255,0.2); }
        .hamburger { display: none; font-size: 1.8rem; cursor: pointer; }
        .breadcrumb { background: #f5f5f5; padding: 12px 0; margin-top: 10px; color: #555; }
        .breadcrumb a { color: #555; }
        main { display: grid; grid-template-columns: 3fr 1fr; gap: 40px; margin: 30px auto; }
        article { background: white; padding: 30px; border-radius: 15px; box-shadow: 0 6px 20px rgba(0,0,0,0.05); }
        h1 { font-size: 3.2rem; color: #1a237e; margin-bottom: 20px; border-left: 8px solid #e67e22; padding-left: 20px; }
        h2 { font-size: 2.4rem; color: #4a148c; margin: 40px 0 20px; padding-bottom: 10px; border-bottom: 3px solid #ffeb3b; }
        h3 { font-size: 1.8rem; color: #333; margin: 30px 0 15px; }
        h4 { font-size: 1.4rem; color: #555; margin: 25px 0 10px; }
        p { margin-bottom: 20px; text-align: justify; font-size: 1.1rem; }
        .highlight { background: #fffde7; border-left: 6px solid #ff9800; padding: 20px; margin: 25px 0; border-radius: 0 10px 10px 0; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        strong { color: #1a237e; }
        .update-time { font-style: italic; color: #777; background: #f9f9f9; padding: 10px; border-radius: 5px; }
        aside { background: #f8f9fa; padding: 25px; border-radius: 15px; height: fit-content; }
        .sidebar-section { margin-bottom: 30px; }
        .sidebar-section h3 { font-size: 1.5rem; color: #1a237e; }
        .form-section { background: #f1f8e9; padding: 25px; border-radius: 10px; margin: 30px 0; }
        form { display: grid; gap: 18px; }
        input, textarea, select { width: 100%; padding: 14px; border: 2px solid #ddd; border-radius: 8px; font-size: 1rem; }
        button { padding: 14px 25px; background: linear-gradient(135deg, #e67e22, #d35400); color: white; border: none; border-radius: 8px; font-size: 1.1rem; cursor: pointer; transition: transform 0.3s; }
        button:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(230,126,34,0.4); }
        footer { background: #1a237e; color: white; padding: 50px 0 20px; margin-top: 50px; }
        .footer-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
        .footer-section h3 { color: #ffeb3b; margin-bottom: 20px; }
        friend-link { display: block; margin-bottom: 12px; }
        friend-link a { color: #bbdefb; }
        .copyright { text-align: center; padding-top: 25px; border-top: 1px solid #3949ab; margin-top: 30px; font-size: 0.9rem; color: #ccc; }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: 50px; right: 0; background: #1a237e; width: 250px; padding: 20px; border-radius: 10px; z-index: 1000; }
            .nav-links.active { display: flex; }
            .nav-links li { margin: 10px 0; }
            .hamburger { display: block; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .header-top { flex-direction: column; gap: 15px; }
            .my-logo { font-size: 2.2rem; }
        }