* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(to right, #0d2b4e, #1a3d6c);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #FFD700;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
            color: #fff;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e6f2ff;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background-color: rgba(255, 215, 0, 0.2);
            color: #FFD700;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto 0.5rem;
            padding: 0 1.5rem;
            font-size: 0.9rem;
            color: #7a8ca5;
        }
        .breadcrumb a {
            color: #1a3d6c;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-button {
            background: linear-gradient(to right, #FF8C00, #FFA500);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .search-button:hover {
            background: linear-gradient(to right, #e67e00, #e69500);
        }
        .main-content {
            flex: 1;
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1.5rem;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        article {
            max-width: 900px;
            margin: 0 auto;
        }
        h1 {
            font-size: 2.8rem;
            color: #0d2b4e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #FFD700;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a3d6c;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #2a4d7a;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            font-size: 1.2rem;
            color: #3a5d8a;
            margin: 1.5rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #444;
            background-color: #f9f9f9;
            padding: 1.5rem;
            border-left: 5px solid #FFA500;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background-color: #fffde7;
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #FFD700;
            margin: 1.5rem 0;
        }
        .tip {
            background-color: #e8f4fd;
            padding: 1rem;
            border-radius: 8px;
            border-left: 4px solid #4dabf7;
            margin: 1.5rem 0;
        }
        .content-img {
            width: 100%;
            max-width: 700px;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .content-img:hover {
            transform: translateY(-5px);
        }
        figcaption {
            text-align: center;
            font-style: italic;
            color: #666;
            padding: 0.5rem;
            font-size: 0.95rem;
        }
        a {
            color: #1a73e8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #0d47a1;
            text-decoration: underline;
        }
        strong { color: #0d2b4e; }
        em { color: #5f6368; }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #777;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        .interactive-section {
            background: #f8fafc;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
        }
        .interactive-section h2 { margin-top: 0; }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #FFD700;
        }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        textarea:focus, input:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        .submit-btn {
            background: linear-gradient(to right, #0d2b4e, #1a3d6c);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            justify-self: start;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #1a3d6c, #2a4d7a);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .site-footer {
            background: #0d2b4e;
            color: #e6f2ff;
            padding: 3rem 1.5rem 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-links h3 {
            color: #FFD700;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li { margin-bottom: 0.75rem; }
        .footer-links a {
            color: #b3d1ff;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: #FFD700;
            padding-left: 5px;
            transition: all 0.3s ease;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #FFD700;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2a4d7a;
            color: #8bb1e8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a {
                display: block;
                padding: 0.75rem;
                border-radius: 6px;
                background-color: rgba(255,255,255,0.05);
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            h3 { font-size: 1.3rem; }
            .intro { font-size: 1.1rem; }
            .main-content { padding: 1.5rem; }
            .interactive-section { padding: 1.5rem; }
        }