* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Nirmala UI', 'Arial', sans-serif;
        }
        :root {
            --primary-blue: #1a6fb4;
            --secondary-blue: #5bc0de;
            --accent-aqua: #20c997;
            --dark-bg: #0d2b4a;
            --light-bg: #f0f8ff;
            --text-dark: #2c3e50;
            --text-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0, 100, 200, 0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, var(--dark-bg), var(--primary-blue));
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent-aqua);
        }
        .logo a:hover {
            color: var(--accent-aqua);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        nav a {
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: var(--border-radius);
        }
        nav a:hover, nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent-aqua);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: var(--text-light);
            background-color: rgba(0, 0, 0, 0.1);
            margin-top: 1rem;
            border-radius: var(--border-radius);
            padding-left: 1rem;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            padding: 2.5rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding: 2rem;
            background: linear-gradient(to right, #e3f2fd, #f0f8ff);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-bg);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            color: #666;
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .featured-image {
            margin: 2.5rem auto;
            max-width: 800px;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .featured-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .featured-image img:hover {
            transform: scale(1.03);
        }
        .content-section {
            margin-bottom: 3rem;
            padding: 2rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 3px solid var(--accent-aqua);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-blue);
            margin: 1.8rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #e7f7ff;
            border-left: 5px solid var(--primary-blue);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tip-card {
            background: #f8fdff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            border: 2px solid #cce7ff;
            transition: var(--transition);
        }
        .tip-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-aqua);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        }
        .tip-card i {
            color: var(--accent-aqua);
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .interactive-section {
            background: linear-gradient(135deg, #e3f2fd, #f0f8ff);
            padding: 2.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid #b3d9ff;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--primary-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(26, 111, 180, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, var(--primary-blue), var(--secondary-blue));
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--border-radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, var(--secondary-blue), var(--accent-aqua));
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0, 0, 0, 0.15);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            direction: ltr;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .comments-section {
            margin-top: 3rem;
        }
        .comment {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--secondary-blue);
        }
        .web-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            padding: 2.5rem 0;
            background-color: var(--dark-bg);
            color: white;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            transition: var(--transition);
        }
        .web-link:hover {
            background: var(--accent-aqua);
            color: var(--dark-bg);
            transform: scale(1.05);
        }
        footer {
            background-color: #0a1e33;
            color: var(--text-light);
            padding: 3rem 0;
            text-align: center;
        }
        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2rem;
        }
        .copyright {
            font-size: 0.95rem;
            opacity: 0.8;
            margin-top: 1rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .tips-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--dark-bg);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                border-radius: 0 0 var(--border-radius) var(--border-radius);
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            nav ul.active {
                display: flex;
            }
            nav li {
                width: 100%;
                text-align: center;
            }
            nav a {
                display: block;
                padding: 1rem;
            }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo {
                margin-bottom: 1rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 0.5rem;
            }
            .interactive-section {
                padding: 1.5rem;
            }
            .web-links {
                gap: 1rem;
                padding: 1.5rem;
            }
            .web-link {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .content-section {
                padding: 1.5rem;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
        }