* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #4a6fa5;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff6b6b;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #4a148c 100%);
            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 {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #ffeb3b;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 2rem;
        }
        nav ul li a {
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav ul li a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: #ffeb3b;
            bottom: 0;
            left: 0;
            transition: width 0.3s ease;
        }
        nav ul li a:hover::after,
        nav ul li a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e3f2fd;
            padding: 12px 20px;
            margin-top: 5px;
            border-radius: 4px;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #1a237e;
        }
        .breadcrumb span {
            color: #777;
            margin: 0 8px;
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 40px;
            padding-bottom: 25px;
            border-bottom: 2px dashed #4a6fa5;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 15px;
            line-height: 1.2;
        }
        .meta {
            color: #666;
            font-style: italic;
            margin-top: 10px;
        }
        .content-section {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin-bottom: 30px;
        }
        h2 {
            color: #283593;
            font-size: 2rem;
            margin: 1.8em 0 1em;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffcc80;
        }
        h3 {
            color: #3949ab;
            font-size: 1.6rem;
            margin: 1.5em 0 0.8em;
        }
        p {
            margin-bottom: 1.2em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffde7;
            border-left: 5px solid #ffd54f;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .inline-link {
            font-weight: bold;
            border-bottom: 1px dotted #4a6fa5;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 1px solid #ddd;
            max-width: 800px;
            margin: 0 auto;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .interactive-box {
            background: #f1f8e9;
            border: 2px solid #7cb342;
            border-radius: 10px;
            padding: 25px;
            margin: 40px 0;
        }
        .interactive-box h3 {
            color: #33691e;
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #444;
        }
        input[type="text"],
        input[type="email"],
        textarea,
        select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: #4a6fa5;
            box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            font-size: 2rem;
            color: #ddd;
            margin: 10px 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            margin-right: 5px;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #ffc107;
        }
        button[type="submit"] {
            background: linear-gradient(to right, #4a6fa5, #1a237e);
            color: white;
            border: none;
            padding: 14px 28px;
            font-size: 1.1rem;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: bold;
        }
        button[type="submit"]:hover {
            background: linear-gradient(to right, #1a237e, #4a6fa5);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.15);
        }
        .longtail-links {
            background: #e8eaf6;
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }
        .longtail-links h3 {
            text-align: center;
            color: #1a237e;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .web-link {
            background: white;
            padding: 15px;
            border-radius: 6px;
            border-left: 4px solid #4a6fa5;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
        }
        .web-link a {
            font-weight: 600;
            display: block;
        }
        footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
            padding-right: 30px;
        }
        .footer-section h4 {
            color: #ffeb3b;
            font-size: 1.3rem;
            margin-bottom: 20px;
            padding-bottom: 8px;
            border-bottom: 1px solid #3949ab;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #c5cae9;
        }
        .footer-links a:hover {
            color: #ffeb3b;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #3949ab;
            color: #9fa8da;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
                margin-top: 15px;
                display: none;
            }
            nav ul.show {
                display: flex;
            }
            nav ul li {
                margin: 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            nav ul li a {
                display: block;
                padding: 12px 0;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            .content-section {
                padding: 20px;
            }
            .article-header h1 {
                font-size: 1.9rem;
            }
            .footer-container {
                flex-direction: column;
            }
            .footer-section {
                padding-right: 0;
            }
            .web-links-container {
                grid-template-columns: 1fr;
            }
        }