* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0c1a2a 0%, #1a3a5f 100%);
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #a5d8ff; transform: translateY(-1px); }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: rgba(12, 26, 42, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2d5a8c;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Times New Roman', serif;
            font-size: 2.5rem;
            font-weight: bold;
            background: linear-gradient(90deg, #ffd700, #ffaa00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 5px rgba(0,0,0,0.5);
        }
        .my-logo:hover { transform: scale(1.05); }
        .nav-primary { display: flex; align-items: center; }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-list a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .nav-list a:hover { background: rgba(45, 90, 140, 0.3); }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #ffaa00;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background: rgba(26, 58, 95, 0.6);
            padding: 12px 0;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #a5d8ff; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { color: #ccc; }
        .hero {
            text-align: center;
            padding: 60px 20px;
            background: radial-gradient(circle at center, rgba(45, 90, 140, 0.4), transparent 70%);
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            color: #ffd700;
            text-shadow: 0 3px 10px rgba(0,0,0,0.7);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #b0d0ff;
        }
        .search-form {
            max-width: 600px;
            margin: 30px auto;
            display: flex;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
            background: rgba(255, 255, 255, 0.95);
            color: #222;
        }
        .search-btn {
            background: linear-gradient(90deg, #ffaa00, #ff7700);
            color: white;
            border: none;
            padding: 0 30px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: linear-gradient(90deg, #ffbb33, #ff9900); }
        .main-content {
            flex-grow: 1;
            padding: 20px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article { background: rgba(26, 40, 58, 0.8); padding: 40px; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); border: 1px solid #2d5a8c; }
        h1, h2, h3, h4 { color: #ffd700; margin-top: 1.8em; margin-bottom: 0.7em; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 3px solid #ffaa00; padding-bottom: 15px; }
        h2 { font-size: 2.2rem; border-left: 5px solid #4dabf7; padding-left: 15px; }
        h3 { font-size: 1.8rem; color: #a5d8ff; }
        h4 { font-size: 1.4rem; color: #80c0ff; }
        p, li { margin-bottom: 1.5em; font-size: 1.1rem; }
        .lead { font-size: 1.3rem; color: #b0d0ff; font-weight: 500; }
        strong { color: #ffaa00; }
        em { color: #80c0ff; }
        ul, ol { padding-left: 2em; margin-bottom: 1.5em; }
        blockquote {
            border-left: 4px solid #ffaa00;
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #ccc;
            background: rgba(45, 90, 140, 0.2);
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            border: 3px solid #ffaa00;
            margin: 30px auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.5);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            margin-top: 10px;
            margin-bottom: 30px;
        }
        .internal-links {
            background: rgba(45, 90, 140, 0.3);
            padding: 25px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .internal-links h3 { margin-top: 0; }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .links-grid a {
            display: block;
            padding: 12px;
            background: rgba(26, 58, 95, 0.6);
            border-radius: 6px;
            text-align: center;
            border: 1px solid #4dabf7;
        }
        .links-grid a:hover { background: rgba(45, 90, 140, 0.8); transform: translateY(-3px); }
        .sidebar { background: rgba(26, 40, 58, 0.8); padding: 30px; border-radius: 15px; border: 1px solid #2d5a8c; align-self: start; position: sticky; top: 140px; }
        .sidebar h3 { color: #ffaa00; border-bottom: 2px solid #4dabf7; padding-bottom: 10px; margin-top: 0; }
        .sidebar-section { margin-bottom: 35px; }
        .sidebar ul { list-style: none; padding-left: 0; }
        .sidebar li { margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px dashed #3a5a7a; }
        .sidebar li:last-child { border-bottom: none; }
        .interactive-section { margin-top: 60px; padding-top: 40px; border-top: 2px dashed #3a5a7a; }
        .interactive-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-top: 30px;
        }
        .form-box {
            background: rgba(26, 40, 58, 0.9);
            padding: 30px;
            border-radius: 10px;
            border: 1px solid #4dabf7;
        }
        .form-box h3 { margin-top: 0; }
        .form-group { margin-bottom: 25px; }
        label { display: block; margin-bottom: 8px; color: #a5d8ff; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #3a5a7a;
            background: rgba(12, 26, 42, 0.8);
            color: #e0e0e0;
            font-size: 1rem;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #ffaa00; box-shadow: 0 0 0 3px rgba(255, 170, 0, 0.3); }
        textarea { min-height: 150px; resize: vertical; }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
            font-size: 2rem;
            color: #555;
        }
        .rating-stars .star { cursor: pointer; transition: color 0.2s; }
        .rating-stars .star:hover,
        .rating-stars .star.active { color: #ffd700; }
        .form-submit {
            background: linear-gradient(90deg, #2d5a8c, #4dabf7);
            color: white;
            border: none;
            padding: 16px 30px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 8px;
            cursor: pointer;
            transition: transform 0.2s, background 0.3s;
            width: 100%;
        }
        .form-submit:hover {
            background: linear-gradient(90deg, #4dabf7, #2d5a8c);
            transform: translateY(-3px);
        }
        .site-footer {
            background: #0c1a2a;
            border-top: 2px solid #2d5a8c;
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo { font-size: 2rem; margin-bottom: 20px; }
        .footer-links h4 { color: #ffaa00; margin-bottom: 20px; }
        .footer-links ul { list-style: none; padding-left: 0; }
        .footer-links li { margin-bottom: 12px; }
        friend-link {
            display: inline-block;
            background: rgba(45, 90, 140, 0.4);
            padding: 10px 20px;
            margin: 5px 10px 5px 0;
            border-radius: 5px;
            border: 1px solid #4dabf7;
        }
        friend-link a { color: #a5d8ff; }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2d5a8c;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
            .sidebar { position: static; margin-top: 40px; }
            .hero h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-list {
                position: fixed;
                top: 90px;
                left: 0;
                width: 100%;
                background: rgba(12, 26, 42, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
                transform: translateY(-150%);
                transition: transform 0.4s ease;
                box-shadow: 0 10px 20px rgba(0,0,0,0.5);
                border-top: 2px solid #2d5a8c;
            }
            .nav-list.active { transform: translateY(0); }
            .nav-list li { width: 100%; }
            .nav-list a { display: block; text-align: center; padding: 15px; }
            .hero h1 { font-size: 2.2rem; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .interactive-grid { grid-template-columns: 1fr; }
            .feature-img { margin: 20px auto; }
        }
        @media (max-width: 480px) {
            .hero { padding: 40px 15px; }
            article, .sidebar { padding: 25px; }
            .search-form { flex-direction: column; border-radius: 10px; }
            .search-input, .search-btn { border-radius: 0; width: 100%; }
            .links-grid { grid-template-columns: 1fr; }
        }