* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0a1a2a;
            color: #e0e0e0;
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: #4da6ff;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ffcc00;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a3a5f 0%, #0a1a2a 100%);
            padding: 20px 0;
            border-bottom: 3px solid #ffcc00;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.5rem;
            font-weight: 900;
            color: #ffcc00;
            text-shadow: 2px 2px 5px #000;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: #4da6ff;
        }
        .my-logo {
            font-style: italic;
            letter-spacing: 1px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            color: #e0e0e0;
            font-weight: 600;
            padding: 10px 15px;
            border-radius: 5px;
            background: rgba(255, 204, 0, 0.1);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        nav ul li a:hover {
            background: #ffcc00;
            color: #0a1a2a;
            transform: translateY(-3px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #ffcc00;
            cursor: pointer;
            background: none;
            border: none;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a {
            color: #4da6ff;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 30px 0;
            background: #0f2438;
            border-radius: 10px;
            margin-top: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        article {
            padding: 20px;
        }
        h1, h2, h3, h4 {
            color: #ffcc00;
            margin-bottom: 20px;
            line-height: 1.4;
        }
        h1 {
            font-size: 3rem;
            text-align: center;
            border-bottom: 2px solid #4da6ff;
            padding-bottom: 15px;
            margin-bottom: 30px;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 40px;
            border-left: 5px solid #ffcc00;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 30px;
            color: #4da6ff;
        }
        h4 {
            font-size: 1.5rem;
            margin-top: 25px;
            color: #e0e0e0;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
            text-align: justify;
            padding: 0 10px;
        }
        .highlight {
            background: rgba(255, 204, 0, 0.1);
            border-left: 4px solid #ffcc00;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        strong {
            color: #ffcc00;
            font-weight: 800;
        }
        .image-container {
            text-align: center;
            margin: 40px 0;
        }
        .image-container img {
            border-radius: 15px;
            border: 3px solid #4da6ff;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.7);
            transition: transform 0.5s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .caption {
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
        }
        .functional-section {
            background: #1a3a5f;
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .functional-box {
            background: #0a1a2a;
            padding: 25px;
            border-radius: 10px;
            border: 2px solid #4da6ff;
            transition: border-color 0.3s ease;
        }
        .functional-box:hover {
            border-color: #ffcc00;
        }
        .functional-box h3 {
            color: #ffcc00;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .functional-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .functional-box input, .functional-box textarea, .functional-box select {
            padding: 12px;
            border-radius: 8px;
            border: 1px solid #4da6ff;
            background: #0f2438;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .functional-box input:focus, .functional-box textarea:focus, .functional-box select:focus {
            outline: none;
            border-color: #ffcc00;
            box-shadow: 0 0 10px rgba(255, 204, 0, 0.5);
        }
        .functional-box button {
            padding: 15px;
            background: linear-gradient(135deg, #ffcc00 0%, #ff9900 100%);
            color: #0a1a2a;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .functional-box button:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(255, 204, 0, 0.3);
        }
        .stars {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin: 15px 0;
        }
        .stars i {
            color: #aaa;
            font-size: 1.5rem;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .stars i:hover, .stars i.active {
            color: #ffcc00;
        }
        .related-links {
            background: rgba(77, 166, 255, 0.1);
            padding: 25px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .related-links h3 {
            color: #ffcc00;
            text-align: center;
            margin-bottom: 20px;
        }
        .related-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }
        .related-links li {
            padding: 15px;
            background: #0f2438;
            border-radius: 8px;
            transition: background 0.3s ease;
        }
        .related-links li:hover {
            background: #1a3a5f;
        }
        .related-links a {
            display: block;
            color: #e0e0e0;
            font-weight: 600;
        }
        footer {
            background: #0a1a2a;
            padding: 40px 0;
            margin-top: 50px;
            border-top: 3px solid #ffcc00;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 30px;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin: 20px 0;
        }
        friend-link a {
            color: #4da6ff;
            font-weight: bold;
            padding: 10px 20px;
            background: rgba(255, 204, 0, 0.1);
            border-radius: 5px;
            transition: background 0.3s ease;
        }
        friend-link a:hover {
            background: #ffcc00;
            color: #0a1a2a;
        }
        .copyright {
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
            padding-top: 20px;
            border-top: 1px solid #1a3a5f;
            width: 100%;
        }
        .update-time {
            color: #ffcc00;
            font-weight: bold;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 20px;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
                display: none;
                background: #1a3a5f;
                padding: 20px;
                border-radius: 10px;
                margin-top: 20px;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
                align-self: flex-end;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            .functional-section {
                grid-template-columns: 1fr;
            }
            .related-links ul {
                grid-template-columns: 1fr;
            }
        }