* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Arial, sans-serif;
        }
        :root {
            --primary: #1a73e8;
            --secondary: #0d47a1;
            --accent: #00bcd4;
            --light: #f5f9ff;
            --dark: #0a2c5e;
            --text: #333;
            --text-light: #666;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --radius: 10px;
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light);
            color: var(--text);
            line-height: 1.7;
            padding-top: 90px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul, ol {
            list-style-position: inside;
            margin-left: 1.2rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .section {
            padding: 60px 0;
        }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 2rem;
            color: var(--dark);
            position: relative;
            padding-bottom: 10px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: var(--accent);
        }
        .search-form {
            display: flex;
            width: 100%;
            max-width: 400px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }
        nav {
            background-color: var(--dark);
        }
        .nav-list {
            display: flex;
            justify-content: center;
            list-style: none;
        }
        .nav-list li {
            position: relative;
        }
        .nav-list a {
            display: block;
            color: white;
            padding: 18px 22px;
            font-weight: 500;
        }
        .nav-list a:hover, .nav-list a.active {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            background-color: #e9f2ff;
            padding: 15px 0;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--text-light);
            margin: 0 8px;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        article {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            overflow: hidden;
        }
        article h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        article h2 {
            font-size: 1.8rem;
            color: var(--secondary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 8px;
            border-bottom: 2px dashed #eee;
        }
        article h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        article p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.05rem;
        }
        article strong {
            color: var(--secondary);
            font-weight: 700;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
            border-left: 5px solid var(--accent);
            padding: 25px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 2rem 0;
        }
        .feature-img {
            width: 100%;
            border-radius: var(--radius);
            margin: 2rem 0;
            border: 5px solid #f0f8ff;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 2rem 0;
        }
        .tip-card {
            background: #f8fdff;
            border: 1px solid #c5e7ff;
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
        }
        .tip-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .tip-card i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 15px;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 25px;
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 1.2rem;
            padding-bottom: 10px;
            border-bottom: 2px solid #eee;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-weight: 600;
            color: var(--text-light);
        }
        .form-group input, .form-group textarea, .form-group select {
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: var(--radius);
            font-size: 1rem;
            resize: vertical;
        }
        .web-links {
            background: var(--dark);
            padding: 40px 0;
            margin-top: 40px;
        }
        .web-links .container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.05);
            padding: 15px;
            border-radius: var(--radius);
            text-align: center;
        }
        .web-link a {
            color: white;
            font-weight: 500;
        }
        .web-link a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        footer {
            background: #0a1a35;
            color: #aaa;
            padding: 40px 0 20px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col {
            flex: 1;
            min-width: 250px;
        }
        .footer-col h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            .nav-list {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 130px;
            }
            .header-top {
                flex-direction: column;
                gap: 15px;
            }
            .search-form {
                max-width: 100%;
            }
            .mobile-toggle {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                box-shadow: var(--shadow);
            }
            nav.active {
                display: block;
            }
            .nav-list {
                flex-direction: column;
            }
            .nav-list a {
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            article {
                padding: 25px;
            }
            article h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }