* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: #1a73e8;
            transition: color 0.3s;
        }
        a:hover {
            color: #0d47a1;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #1a237e, #311b92);
            color: white;
            padding: 15px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(45deg, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            transform: scale(1.05);
            transition: transform 0.3s;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 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;
            color: white;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 12px 20px;
            margin: 10px 0;
            border-radius: 8px;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
            margin: 30px 0;
        }
        article {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        aside {
            background: white;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            align-self: start;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 20px;
            text-align: center;
            border-bottom: 3px solid #ff9800;
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: #311b92;
            margin: 25px 0 15px;
            padding-left: 10px;
            border-left: 5px solid #1a73e8;
        }
        h3 {
            font-size: 1.6rem;
            color: #5c6bc0;
            margin: 20px 0 10px;
        }
        h4 {
            font-size: 1.3rem;
            color: #7986cb;
            margin: 15px 0 8px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
            font-size: 1.1rem;
        }
        strong {
            color: #d32f2f;
            font-weight: 800;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .image-container {
            text-align: center;
            margin: 25px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: transform 0.4s;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .update-time {
            background: #e8f5e9;
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            font-style: italic;
            margin: 20px 0;
            color: #2e7d32;
        }
        .form-section {
            background: #f9f9f9;
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 4px solid #1a73e8;
        }
        .form-section h3 {
            color: #1a237e;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        input, textarea, select {
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #1a73e8;
            outline: none;
        }
        button {
            padding: 12px 24px;
            background: linear-gradient(90deg, #1a237e, #311b92);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        button:hover {
            background: linear-gradient(90deg, #311b92, #1a237e);
            transform: translateY(-3px);
        }
        footer {
            background: #1a237e;
            color: white;
            padding: 30px 0;
            margin-top: 40px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #ffeb3b;
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.1);
            padding: 10px;
            margin: 8px 0;
            border-radius: 6px;
            transition: background 0.3s;
        }
        friend-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #5c6bc0;
            font-size: 0.9rem;
            color: #c5cae9;
            margin-top: 20px;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .nav-links {
                gap: 15px;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 15px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #311b92;
                padding: 20px;
                border-radius: 10px;
                margin-top: 15px;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .footer-content {
                flex-direction: column;
            }
        }