* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #2c5aa0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e63946;
            text-decoration: underline;
        }
        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;
        }
        header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: white;
            text-transform: uppercase;
            background: linear-gradient(90deg, #ff9a00, #ffd166);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255,255,255,0.7);
            color: white;
            font-size: 1.5rem;
            padding: 5px 10px;
            border-radius: 5px;
            cursor: pointer;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav a {
            color: #e0e7ff;
            font-weight: 600;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav a:hover, nav a.active {
            color: #ffd166;
            border-bottom-color: #ffd166;
            text-decoration: none;
        }
        .breadcrumb {
            background-color: #e9edf5;
            padding: 12px 0;
            font-size: 0.9rem;
            color: #666;
        }
        .breadcrumb a {
            color: #2c5aa0;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #999;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            padding: 40px;
            margin-bottom: 40px;
        }
        .article-header {
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 25px;
            margin-bottom: 35px;
        }
        h1 {
            font-size: 2.8rem;
            color: #1e3c72;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: #777;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
        .last-updated {
            color: #e63946;
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: #2a5298;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed #cbd5e1;
        }
        h3 {
            font-size: 1.6rem;
            color: #3a6bc5;
            margin: 28px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #4f7ccc;
            margin: 22px 0 12px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: #444;
            font-weight: 500;
            background-color: #f8fafc;
            padding: 20px;
            border-left: 4px solid #ff9a00;
            border-radius: 0 8px 8px 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff9db;
            padding: 20px;
            border-radius: 8px;
            border-left: 5px solid #ffd166;
            margin: 25px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        img.float-right {
            float: right;
            margin: 15px 0 20px 30px;
            max-width: 45%;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 8px;
            font-size: 0.9rem;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        blockquote {
            border-left: 4px solid #2c5aa0;
            padding-left: 25px;
            margin: 25px 0;
            font-style: italic;
            color: #555;
            background-color: #f8fafc;
            padding-top: 15px;
            padding-bottom: 15px;
            border-radius: 0 8px 8px 0;
        }
        .interactive-section {
            background: linear-gradient(145deg, #f0f7ff, #e1ecfe);
            border-radius: 12px;
            padding: 30px;
            margin: 40px 0;
            border: 1px solid #c1d6ff;
        }
        .interactive-section h3 {
            color: #1e3c72;
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #b8c6db;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2c5aa0;
            box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.2);
        }
        button {
            background: linear-gradient(to right, #2c5aa0, #3a6bc5);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        button:hover {
            background: linear-gradient(to right, #1e3c72, #2c5aa0);
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(44, 90, 160, 0.3);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .star-rating {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-rating .active {
            color: #ffd700;
        }
        .star-rating:hover .fa-star {
            color: #ffd700;
        }
        .star-rating .fa-star:hover ~ .fa-star {
            color: #ddd;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        aside {
            background-color: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            align-self: start;
        }
        aside h3 {
            font-size: 1.4rem;
            color: #1e3c72;
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #e0e0e0;
        }
        .related-links li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-links a:before {
            content: '🔗';
            font-size: 0.9em;
        }
        footer {
            background-color: #1a1a2e;
            color: #b0b7c3;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffd166;
            margin-bottom: 15px;
        }
        .footer-links a {
            color: #b0b7c3;
            display: block;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: #ffd166;
        }
        friend-link {
            display: block;
            margin: 10px 0;
            padding: 8px 15px;
            background-color: #2d3047;
            border-radius: 5px;
            border-left: 3px solid #ff9a00;
        }
        friend-link a {
            color: #e0e7ff;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2d3047;
            font-size: 0.9rem;
            color: #8a8f9c;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            aside {
                order: -1;
            }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            article { padding: 25px; }
            .header-top {
                flex-wrap: wrap;
            }
            .mobile-toggle {
                display: block;
            }
            nav {
                width: 100%;
                display: none;
                margin-top: 15px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 0;
            }
            nav li {
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            nav a {
                display: block;
                padding: 12px 0;
            }
            img.float-right {
                float: none;
                margin: 20px auto;
                max-width: 100%;
            }
        }