* {
            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: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ffeb3b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a3a5f 0%, #0a1a2a 100%);
            padding: 15px 0;
            border-bottom: 3px solid #4fc3f7;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: #4fc3f7;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 0 10px rgba(79, 195, 247, 0.7);
        }
        .my-logo:hover {
            color: #ffeb3b;
            text-shadow: 0 0 15px rgba(255, 235, 59, 0.9);
        }
        .nav-main {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 25px;
        }
        .nav-links a {
            font-size: 1.1rem;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background-color: rgba(79, 195, 247, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #4fc3f7;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #132a42;
            margin-bottom: 20px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin-left: 10px;
            color: #888;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            padding: 30px 0;
        }
        .article-content {
            background: rgba(19, 42, 66, 0.8);
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        h1, h2, h3, h4 {
            color: #4fc3f7;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            text-align: center;
            border-bottom: 3px solid #ff9800;
            padding-bottom: 15px;
            margin-top: 0;
        }
        h2 {
            font-size: 2.4rem;
            border-left: 5px solid #ff9800;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.9rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #ffeb3b;
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.15rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(255, 152, 0, 0.15);
            padding: 20px;
            border-left: 5px solid #ff9800;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .bold {
            font-weight: 900;
            color: #ffeb3b;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 8px;
        }
        .article-image {
            float: right;
            margin: 0 0 25px 25px;
            width: 45%;
            max-width: 500px;
            border-radius: 10px;
            border: 3px solid #4fc3f7;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .form-box {
            background: #132a42;
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #2a4a6a;
        }
        .form-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .form-box input, .form-box textarea, .form-box select {
            padding: 12px;
            border-radius: 8px;
            border: 1px solid #2a4a6a;
            background-color: #0a1a2a;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .form-box button {
            padding: 12px 20px;
            background: linear-gradient(to right, #4fc3f7, #2196f3);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .form-box button:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(33, 150, 243, 0.4);
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ff9800;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .site-footer {
            background: #0a1a2a;
            padding: 40px 0 20px;
            border-top: 3px solid #4fc3f7;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        friend-link {
            display: block;
            margin: 15px 0;
            padding: 12px;
            background: rgba(19, 42, 66, 0.8);
            border-radius: 8px;
            border-left: 4px solid #ff9800;
            transition: transform 0.3s ease;
        }
        friend-link:hover {
            transform: translateX(10px);
            background: rgba(19, 42, 66, 1);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #2a4a6a;
            margin-top: 30px;
            color: #aaa;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #1a3a5f;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-top: 2px solid #4fc3f7;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 10px 0;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            .article-image {
                float: none;
                width: 100%;
                margin: 20px 0;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #aaa;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .pyramid-indicator {
            display: inline-block;
            background: #ff9800;
            color: #0a1a2a;
            padding: 5px 10px;
            border-radius: 5px;
            font-weight: bold;
            margin-right: 10px;
        }