* { 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: #333;
            background-color: #f8f9fa;
            background-image: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { color: #4a6ee0; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #2a4ec4; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 { color: #1a237e; margin-bottom: 1rem; font-weight: 700; line-height: 1.3; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); border-bottom: 3px solid #4a6ee0; padding-bottom: 0.5rem; margin-top: 1.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #ff9800; }
        h3 { font-size: 1.6rem; margin-top: 2rem; color: #303f9f; }
        h4 { font-size: 1.3rem; margin-top: 1.5rem; color: #5c6bc0; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        .lead { font-size: 1.25rem; color: #555; font-weight: 300; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .bold { font-weight: 700; color: #1a237e; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .main-content { display: grid; grid-template-columns: 1fr 300px; gap: 40px; margin: 30px 0; }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article { background: white; padding: 30px; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
        aside { background: white; padding: 25px; border-radius: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); align-self: start; position: sticky; top: 20px; }
        header { background: linear-gradient(90deg, #1a237e, #303f9f); color: white; padding: 1rem 0; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
        .my-logo { font-family: 'Arial Black', sans-serif; font-size: 2rem; color: #ffeb3b; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        .my-logo a { color: inherit; text-decoration: none; }
        .my-logo a:hover { color: #fff; text-decoration: none; }
        nav ul { display: flex; list-style: none; gap: 25px; }
        nav a { color: #e8eaf6; font-weight: 600; padding: 8px 5px; border-radius: 4px; }
        nav a:hover { color: #ffeb3b; background-color: rgba(255,255,255,0.1); text-decoration: none; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        @media (max-width: 768px) {
            nav ul { flex-direction: column; position: fixed; top: 70px; left: -100%; background: #303f9f; width: 100%; padding: 20px; border-radius: 0 0 15px 15px; transition: left 0.5s ease; z-index: 1000; }
            nav ul.active { left: 0; }
            .hamburger { display: block; }
        }
        .breadcrumb { padding: 15px 0; font-size: 0.9rem; color: #666; }
        .breadcrumb a { color: #666; }
        .breadcrumb a:hover { color: #1a237e; }
        .breadcrumb span { margin: 0 8px; }
        .form-section { background: #e8eaf6; padding: 25px; border-radius: 10px; margin: 30px 0; border-left: 5px solid #4a6ee0; }
        .form-title { margin-top: 0; color: #1a237e; }
        .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 #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s, box-shadow 0.3s;
        }
        input:focus, textarea:focus, select:focus { outline: none; border-color: #4a6ee0; box-shadow: 0 0 0 3px rgba(74, 110, 224, 0.2); }
        button, .btn {
            background: linear-gradient(to right, #4a6ee0, #3a56c0);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover { background: linear-gradient(to right, #3a56c0, #2a46a0); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); text-decoration: none; }
        .rating-stars { display: flex; gap: 5px; margin: 10px 0; }
        .rating-stars input { display: none; }
        .rating-stars label { font-size: 1.8rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label { color: #ffc107; }
        .featured-img { margin: 30px 0; border-radius: 12px; overflow: hidden; box-shadow: 0 15px 35px rgba(0,0,0,0.1); }
        .featured-img figcaption { text-align: center; font-style: italic; padding: 10px; background: #f1f3ff; color: #666; font-size: 0.9rem; }
        .content-links { margin: 20px 0; padding: 15px; background: #f1f8ff; border-radius: 8px; }
        .content-links ul { list-style-position: inside; }
        .content-links li { margin-bottom: 8px; }
        footer { background: #1a237e; color: #c5cae9; margin-top: auto; padding: 40px 0 20px; }
        .footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
        .footer-section h4 { color: #ffeb3b; border-bottom: 2px solid #3949ab; padding-bottom: 10px; }
        friend-link { display: block; margin-bottom: 8px; }
        friend-link a { color: #bbdefb; }
        friend-link a:hover { color: white; }
        .copyright { text-align: center; padding-top: 25px; margin-top: 25px; border-top: 1px solid #3949ab; font-size: 0.9rem; color: #9fa8da; }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .last-updated { font-size: 0.9rem; color: #666; background: #e8f4fd; padding: 10px; border-radius: 5px; margin: 20px 0; display: inline-block; }
        .tag { display: inline-block; background: #e3f2fd; color: #1565c0; padding: 4px 12px; border-radius: 20px; font-size: 0.8rem; margin-right: 8px; margin-bottom: 8px; }