* {
            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;
            max-width: 100%;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        ul, ol {
            list-style-position: inside;
            padding-left: 1.2em;
        }
        h1, h2, h3, h4 {
            color: #1a5276;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; border-bottom: 3px solid #76d7c4; padding-bottom: 0.3em; }
        h3 { font-size: 1.8rem; color: #2e86c1; }
        h4 { font-size: 1.4rem; }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
        }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #2c3e50;
            background-color: #e8f6f3;
            padding: 1.5em;
            border-radius: 10px;
            margin: 2em 0;
            border-left: 5px solid #1abc9c;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2em 0.5em;
            border-radius: 4px;
            font-weight: 600;
        }
        .keyword {
            color: #e74c3c;
            font-weight: bold;
        }
        .emoji { font-size: 1.2em; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .grid-2col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 2em 0;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        header {
            background: linear-gradient(135deg, #1a5276 0%, #2e86c1 100%);
            color: white;
            padding: 1em 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            color: #76d7c4;
            letter-spacing: 1px;
        }
        .logo span {
            color: white;
        }
        nav ul {
            display: flex;
            gap: 2em;
        }
        nav li {
            list-style: none;
        }
        nav a {
            padding: 0.5em 0.8em;
            border-radius: 5px;
            font-weight: 600;
        }
        nav a:hover, nav a.active {
            background-color: rgba(255,255,255,0.15);
            color: #76d7c4;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 992px) {
            .flex-between { flex-direction: column; align-items: flex-start; }
            nav ul { flex-direction: column; width: 100%; margin-top: 1em; display: none; }
            nav ul.show { display: flex; }
            .hamburger { display: block; align-self: flex-end; margin-top: -2.5em; }
        }
        .breadcrumb {
            background-color: #eaeaea;
            padding: 1em;
            border-radius: 5px;
            margin: 1.5em 0;
            font-size: 0.95rem;
        }
        .breadcrumb a:hover { color: #e74c3c; }
        .search-box {
            background: white;
            padding: 2em;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            margin: 2em 0;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 1em;
            border: 2px solid #1abc9c;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background: #1abc9c;
            color: white;
            border: none;
            padding: 0 1.5em;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #16a085; }
        main {
            background: white;
            padding: 2.5em;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            margin: 2em auto;
        }
        .article-img {
            width: 100%;
            border-radius: 12px;
            margin: 2.5em auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 3px solid #1abc9c;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.5em;
        }
        .info-box {
            background: #e8f8f5;
            border-left: 5px solid #2e86c1;
            padding: 1.5em;
            margin: 2em 0;
            border-radius: 0 10px 10px 0;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid #e74c3c;
            padding-left: 1.5em;
            margin: 2em 0;
            color: #555;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #3498db, #2e86c1);
            color: white;
            padding: 0.8em 1.8em;
            border-radius: 8px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 12px rgba(52, 152, 219, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(to right, #1abc9c, #16a085);
        }
        .interactive-section {
            background: #f4f6f7;
            padding: 2.5em;
            border-radius: 15px;
            margin-top: 3em;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin: 1em 0;
            font-size: 1.8rem;
            color: #f1c40f;
            cursor: pointer;
        }
        .star:hover { transform: scale(1.2); }
        textarea, input[type="text"], input[type="email"] {
            width: 100%;
            padding: 1em;
            margin-bottom: 1.2em;
            border: 1px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
        }
        .form-group { margin-bottom: 1.5em; }
        .longtail-links {
            background: #2c3e50;
            color: white;
            padding: 3em 2em;
            margin-top: 4em;
        }
        .web-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            margin: 0.8em;
            padding: 0.8em 1.5em;
            border-radius: 30px;
            transition: all 0.3s;
        }
        .web-link:hover {
            background: #1abc9c;
            transform: scale(1.05);
        }
        footer {
            background: #1a252f;
            color: #bdc3c7;
            text-align: center;
            padding: 2.5em;
            font-size: 0.95rem;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2em;
            margin-bottom: 2em;
        }
        .footer-links a:hover { color: #76d7c4; }
        @media (max-width: 768px) {
            .container { padding: 0 15px; }
            main { padding: 1.5em; }
            .grid-2col { grid-template-columns: 1fr; }
            .interactive-section { padding: 1.5em; }
            .longtail-links { padding: 2em 1em; text-align: center; }
        }