* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 1rem 2rem;
            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;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: #ffd54f;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: transform 0.3s ease;
        }
        .logo a:hover {
            transform: scale(1.05);
        }
        .logo span {
            color: #4fc3f7;
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            padding: 0.5rem 1rem;
            border-radius: 20px;
            transition: all 0.3s ease;
            font-weight: 600;
        }
        .desktop-nav a:hover {
            background: #4fc3f7;
            color: #1a237e;
        }
        .mobile-nav-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd54f;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #283593;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            padding: 0.8rem;
            border-bottom: 1px solid #3949ab;
            transition: background 0.3s;
        }
        .mobile-nav a:hover {
            background: #3949ab;
        }
        .breadcrumb {
            background: #e8eaf6;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            color: #555;
            max-width: 1400px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #1a237e;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }
        article {
            padding: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            text-align: center;
            line-height: 1.2;
            border-bottom: 3px solid #ffd54f;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2rem 0 1rem;
            padding-left: 0.5rem;
            border-left: 5px solid #4fc3f7;
        }
        h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
            color: #444;
        }
        .highlight {
            background: #e3f2fd;
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #2196f3;
            margin: 1.5rem 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        .bold {
            font-weight: 800;
            color: #1a237e;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            display: block;
            margin: 2rem auto;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: transform 0.4s ease;
        }
        img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        .functional-sections {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
            padding: 2rem;
            background: #f5f5f5;
            border-radius: 10px;
        }
        .search-box, .comment-box, .rating-box {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        .search-box:hover, .comment-box:hover, .rating-box:hover {
            transform: translateY(-5px);
        }
        .functional-sections h3 {
            color: #1a237e;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .functional-sections h3 i {
            color: #ff9800;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            border-color: #4fc3f7;
            outline: none;
        }
        button {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            width: 100%;
        }
        button:hover {
            background: linear-gradient(90deg, #283593, #3949ab);
            box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
        }
        footer {
            background: #1a237e;
            color: white;
            margin-top: 3rem;
        }
        .long-tail-links {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 8px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        .web-link a {
            color: #ffd54f;
            font-weight: 500;
        }
        .web-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding: 1.5rem;
            background: #0d153a;
            font-size: 0.9rem;
            color: #bbb;
        }
        .copyright a {
            color: #4fc3f7;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.8rem; }
            .desktop-nav { display: none; }
            .mobile-nav-toggle { display: block; }
            .functional-sections { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .header-container, main, .breadcrumb, .long-tail-links { padding-left: 1rem; padding-right: 1rem; }
            article { padding: 1.5rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .logo a { font-size: 1.6rem; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.7rem; }
            h2 { font-size: 1.4rem; }
            p { font-size: 1rem; }
        }