:root {
            --primary-color: #1a6bc4;
            --secondary-color: #d4a017;
            --accent-color: #e63946;
            --dark-bg: #0f1419;
            --light-bg: #f8f9fa;
            --text-dark: #2d3748;
            --text-light: #f7fafc;
            --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #1e3a8a 100%);
            color: var(--text-light);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(to right, #ffd166, #ff9e6d);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: var(--text-light);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.5rem 0;
            position: relative;
        }
        nav a:hover {
            color: var(--secondary-color);
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: var(--transition);
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-light);
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #6c757d;
        }
        .breadcrumb a:last-child {
            color: var(--text-dark);
            font-weight: 600;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #adb5bd;
        }
        main {
            padding: 2.5rem 0;
        }
        article {
            background: white;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: var(--card-shadow);
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-bg);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 5px solid var(--secondary-color);
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e2e8f0;
        }
        h3 {
            font-size: 1.5rem;
            color: var(--text-dark);
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #4a5568;
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid var(--primary-color);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background: linear-gradient(120deg, #ffec99 0%, #ffec99 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .info-box {
            background: #e7f3ff;
            border-left: 5px solid var(--primary-color);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .warning-box {
            background: #fff3cd;
            border-left: 5px solid #ffc107;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.8rem;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
            margin: 2rem auto;
            display: block;
            transition: transform 0.5s ease;
        }
        img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-color), #2a9d8f);
            color: white;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            text-align: center;
            margin: 1.5rem 0;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 15px rgba(42, 157, 143, 0.3);
        }
        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(42, 157, 143, 0.4);
            color: white;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        aside {
            background: white;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: var(--card-shadow);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        aside h3 {
            color: var(--primary-color);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .sidebar-list {
            list-style: none;
            margin-left: 0;
        }
        .sidebar-list li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #f1f1f1;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-dark);
        }
        .sidebar-list a:hover {
            color: var(--primary-color);
        }
        .sidebar-list i {
            color: var(--secondary-color);
        }
        .interactive-section {
            background: white;
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: var(--card-shadow);
            margin-bottom: 2.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(26, 107, 196, 0.1);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating-stars i {
            color: #e2e8f0;
            font-size: 1.8rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #ffc107;
        }
        .btn-submit {
            background: var(--primary-color);
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-submit:hover {
            background: #1557b0;
            transform: translateY(-3px);
        }
        .footer-links {
            background: var(--dark-bg);
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-link {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            color: #cbd5e0;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .web-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background: #0a0e14;
            color: #a0aec0;
            text-align: center;
            padding: 2.5rem 0;
            font-size: 0.95rem;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .social-links {
            display: flex;
            gap: 1.5rem;
        }
        .social-links a {
            color: #a0aec0;
            font-size: 1.3rem;
        }
        .social-links a:hover {
            color: var(--secondary-color);
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--dark-bg);
                padding: 1rem;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            article, .interactive-section, aside {
                padding: 1.8rem;
            }
            .lead {
                font-size: 1.15rem;
                padding: 1.2rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .cta-button {
                padding: 0.8rem 1.5rem;
                font-size: 1rem;
            }
        }