* {
            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: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #a5d8ff;
            text-decoration: underline;
        }
        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, #0c2d4a 0%, #09283a 100%);
            border-bottom: 3px solid #1a5b92;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(to right, #ffd166, #ef476f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 2rem;
        }
        .nav-links a {
            color: #b0d0ff;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background-color: rgba(26, 91, 146, 0.4);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #b0d0ff;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #112b42;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 0.5rem;
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 0.5rem;
            color: #6c8bac;
        }
        main {
            padding: 2rem 0;
            background-color: #0e2439;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px dashed #2a5175;
        }
        h1 {
            font-size: 3rem;
            color: #ffd166;
            margin-bottom: 1rem;
            line-height: 1.2;
            text-shadow: 2px 2px 4px #000;
        }
        .meta-info {
            color: #8fb8de;
            font-style: italic;
            margin-top: 1rem;
        }
        .content-section {
            margin-bottom: 3rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #4dabf7;
            margin: 2rem 0 1rem;
            border-left: 5px solid #ef476f;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #a5d8ff;
            margin: 1.8rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #c4e2ff;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #1a3a5f;
            border-left: 4px solid #ffd166;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip {
            background-color: #153352;
            border: 1px solid #2a5175;
            padding: 1rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            display: flex;
            align-items: flex-start;
        }
        .tip i {
            color: #ffd166;
            margin-right: 1rem;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 900px;
        }
        .image-container img {
            border-radius: 10px;
            border: 3px solid #2a5175;
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }
        .image-caption {
            font-style: italic;
            color: #8fb8de;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .interactive-box {
            background: linear-gradient(145deg, #153352, #0f2942);
            border-radius: 12px;
            padding: 2rem;
            margin: 2.5rem 0;
            border: 2px solid #2a5175;
            box-shadow: 0 8px 16px rgba(0,0,0,0.4);
        }
        .interactive-box h3 {
            margin-top: 0;
            color: #ffd166;
        }
        form {
            display: grid;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #a5d8ff;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border-radius: 6px;
            border: 1px solid #4d7cab;
            background-color: #0a1a2a;
            color: #e0e0e0;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ffd166;
            box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.2);
        }
        button {
            background: linear-gradient(to right, #1a5b92, #4dabf7);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            justify-self: start;
        }
        button:hover {
            background: linear-gradient(to right, #4dabf7, #1a5b92);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(26, 91, 146, 0.4);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #4d7cab;
            cursor: pointer;
            transition: color 0.2s;
            margin-bottom: 0;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffd166;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .link-card {
            background-color: #112b42;
            border-radius: 10px;
            padding: 1.5rem;
            border: 1px solid #2a5175;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        .link-card:hover {
            transform: translateY(-5px);
            border-color: #4dabf7;
        }
        .link-card h4 {
            margin-top: 0;
            color: #a5d8ff;
        }
        footer {
            background-color: #09283a;
            padding: 3rem 0 1.5rem;
            border-top: 3px solid #1a5b92;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffd166;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        friend-link {
            display: block;
            padding: 0.8rem 1rem;
            background-color: #153352;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 4px solid #ef476f;
            transition: background-color 0.3s;
        }
        friend-link:hover {
            background-color: #1a3a5f;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2a5175;
            color: #8fb8de;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .header-container { flex-wrap: wrap; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background-color: #0c2d4a;
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                transition: right 0.5s ease;
                padding-top: 2rem;
                border-left: 2px solid #1a5b92;
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 0 0 1.5rem 0;
                padding-left: 2rem;
            }
            .footer-content {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .container { padding: 0 15px; }
            .interactive-box { padding: 1.5rem; }
        }